Coupons You Get at Grocery Stores are Based on Your Purchases
In the United States it is very common for supermarkets to offer discounts to shoppers who present their loyalty card at the checkout. Price tags in the aisles often quote two prices, with and without the discount card.
The loyalty cards are usually provided by the retailer at no charge. However, they’re not free.
Although you don’t pay any money for these cards, you do handover your entire purchase history at that store. Your information is often used immediately at your time of purchase to determine which coupons should be printed out for your next visit.

Marketers frequently target consumers who buy their competitors products. For example, if you frequently buy Uncle Ben’s Rice, you may get a coupon from Rice-A-Roni. The manufacturer is trying to entice you to buy their brand the next time you shop.
Purchase history may also be used to determine the dollar value of the coupons you receive. For example, if you normally buy Dannon yogurt, then Yoplait may offer you $0.50 off your next Yoplait purchase. If you’re already a Yoplait customer, you may only get a $0.10 coupon or none at all.
Obviously, you don’t need a loyalty card for the store to recognize that you’re buying Uncle Ben’s today, but it is important if they want to know if you have bought that brand before or if you typically buy another brand.
When you sign up for a loyalty card, you often fill out a short survey of personal information, including your home address. They say they want your address so they can mail other offers to you, which they may. More importantly, your address allows them to understand a lot about you, including the average income of your neighborhood and even how much you paid for your house. In some cases, these programs are run by outside companies. Your address will help them combine your shopping information from multiple stores, assuming you always use the same name and address.
By comparing your personal information with information about other people’s shopping habits, average income and other demographic information, they can predict which products you’ll most likely try if they provide a coupon a for it.
Many stores will give you their loyalty card and let you use it right away, then they send you home with a survey to fill out and mail in to register for the card. I can tell you from experience that you can use your loyalty card for years without ever mailing the survey in. Although they’re collecting your shopping history, they don’t know much else about you.
There are also studies that show stores with loyalty cards don’t always have the best price, even when you use your frequent shopper card. In fact, one study even showed that sale prices went up after the introduction of a loyalty shopping card. It’s a good idea to keep track of the prices of a few items you commonly purchase to see if the regular price is better at other nearby stores.
I usually shop at a co-op, which does not use a loyalty card but has better prices than any other store around. They even have better prices than Target on items that they both carry, although that is one of the few places I cannot use my credit card to get cash back — they only accept cash or debit, one way they try to keep their costs down.
It’s not just grocery stores that provide you with sponsored coupons. I stopped at target yesterday to pick up some envelopes, on my way to the cash I spotted a new iced coffee drink. From other posts, you know I am addicted to coffee, so I couldn’t resist. At the register I was given a $7 off coupon for Crest Whitening strips. I doubt the envelopes triggered that.
Broken Secrets | By: Chad Upton
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Sources: Seattle Press, No Cards, an Industry Insider
The Purpose of Color and Registration Marks on Packaging
I first noticed these marks on cereal boxes as a kid. After pouring a bowl of cereal, I’d read the front panel, then the back and eventually I’d be reading the subscript on the top panels.
The folding panels of many cardboard packages contain colored boxes and cross-hair markings. I always wondered what they were for.

The cross-hairs are called “registration marks” and they may be used for different purposes during the printing and package making process.
In the initial stages of the printing process, they are used to ensure the printing plates are properly aligned in multiple color processes. Technicians use these marks to perform the initial setup and make adjustments during the print run. Advanced printing presses also have sensors to check for alignment and make automatic adjustments.
The registration marks may also be used to align materials in other machines that do cutting, folding and gluing.
The color boxes are used by printing technicians to verify the proper quantity of ink is being laid on the printed material. This allows them to match color samples to ensure consistency from start to finish of the printing run and even across printing facilities that print the same materials around the world.
Thanks to Todd M for suggesting this secret.
Broken Secrets | By: Chad Upton
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Sources: Computer Hope, Wikipedia (Registration), Sensors
What are Truck Weigh Stations for?
There are truck weigh stations scattered along most major highways in the US, Canada, Taiwan and other countries. Obviously they’re there to weigh trucks, but why do trucks need to be constantly weighed?
Vehicles that weigh more than 26,000 pounds or have 3 or more axles have to pay fuel taxes. Motor homes and other private (non-commercial) vehicles are generally exempt. For example, if you see a race-car team drive by, you’ll often see “not for hire” on the side of the cab. That suggests the vehicle is exempt from the fuel tax charges and keeps other trucking companies from soliciting their services.
Truck weigh stations were originally developed for states to collect the fuel taxes they were owed by the commercial trucks using their roadways. It is similar to the licensing concept that I talked about in a previous post, Why U-Hauls Have Arizona License Plates.

In North America, weight stations aren’t directly used for that purpose anymore. There is now an International Fuel Tax Agreement which allows truckers to file a quarterly tax report. Weigh stations are still used to enforce the tracking and submission of the logs and the payment of the fuel tax.
The scales are still used to enforce weight restrictions. The federal weight restriction is 80,000 pounds. Trucks need a trip permit to transport a load exceeding that weight.
Some weigh stations are pretty high-tech, supporting “weigh-in-motion” technology. This technology can allow truckers to bypass weigh stations entirely. This involves the truck driving over a scale that is built into the right lane of the road, usually about a mile before the weigh station. Depending on the weight of the vehicle, its history and the history of the trucking company, the weigh station operator or an automated system will decide if the truck needs to pull into the weigh station.
Truckers who use these systems have a transponder in their truck, similar to those used for electronic toll collection. If they can skip the weigh station, they will usually get a green light on the transponder. If they need to pull in, they will get a red light.
Weigh stations are also used for safety inspections of vehicles. Truckers often refer to weigh stations as “chicken coops.” Check out my post on trucker signals for more trucker slang.
Broken Secrets | By: Chad Upton
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Sources: Wikipedia (weigh station, IFTA, weigh in motion)
Photo: OregonDOT (cc)
Cats Cannot Taste Sweetness in Food
My favorite classic science fair exhibit is the taste buds booth.
It’s like going to the electronics department in Costco — you eat free food samples while some kid tells you stuff you’ll never remember because all you’re thinking about is how you can get away from the booth without it looking like you just came over for the free food samples.
Taste has been studied for a long time. In 1901, Harvard professor Edwin G. Boring published a paper that stated different taste receptors can be found on different parts of the human tongue. His last name was Boring, but his work was not. In fact, his work is slightly controversial since all areas of the tongue are sensitive to all tastes; however, some areas are more sensitive than others.
Some wine and beer glasses are shaped to encourage the liquid to hit certain parts of your tongue first, this is supposed to deliver the ideal taste sensation for that drink.
There are five generally accepted taste sensations:
- Sweet
- Bitter
- Savory
- Salty
- Sour
Most mammals can experience all of these sensations. There are some exceptions, particularly with sweetness. New world monkeys do not perceive aspartame as sweet. Humans, apes and old world monkeys do. Cats cannot taste sweetness at all.
Broken Secrets | By: Chad Upton
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Sources: Wikipedia (taste buds, sweetness, wine glass), Scientific American
Why Chocolate is Dangerous for Dogs and Not Humans
Whether it was your idea or not, your dog or cat may swallow chocolate at sometime in their life.
You want to avoid that since there are two toxins in chocolate that can have adverse affects on your pets: caffeine and theobromine.
Both of these drugs are very similar, but chocolate contains a lot more theobromine than caffeine. Theobromine does not affect the human nervous system as much as caffeine, nor is it as addictive as caffeine. But, theobromine is still addictive and believed to be the agent that causes Chocolate addiction. It is also believed to be responsible for chocolate’s notoriety as an aphrodisiac.
Although theobromine increases heart rate in humans, it also dilates blood vessels, which reduces blood pressure. In fact, it is superior to codeine at suppressing cough and can be helpful in relaxing muscles to alleviate symptoms of asthma.
Humans are able to consume chocolate in moderation because we can breakdown theobromine fairly quickly. In dogs, cats, rats and other species, they cannot digest it efficiently. This leads to a buildup of this toxin and is known as theogromine poisoning. Actually, this can also happen to elderly people who consume large quantities of chocolate.
For animals, a dangerous quantity of chocolate depends on the type of chocolate. Milk chocolate is not as dangerous as semisweet chocolate and it’s not as dangerous as cocoa powder.
Milk chocolate contains approx 44-64 milligrams of theobromine per ounce. Semi-sweet chocolate is about 150-160 mg/oz. Cocoa powder is 800 mg/oz.
A toxic dose for pets is 100-200 mg/kg of body weight (1 kg = 2.2 pounds). That said, problems can still be evident with smaller doses.
Signs of toxicity include:
- Excitement, nervousness, trembling
- Vomiting or diarrhea
- Excessive thirst
- Muscle spasms
- Seizures
- Coma
- Death (usually a result of other problems caused by the toxin)
As much as people like to treat their pets like humans, they are not human and should not be treated like humans when it comes to diet. There are many other human foods that are not recommended and poisonous to pets:
- Alcohol
- Avocado
- Coffee
- Fatty Foods
- Onions
- Raisins and grapes
- Salt
- Yeast dough
- Garlic
- Artificial sweetener
Pet’s digestive systems are very different from humans. Checkout Vetinfo for more details on why some of the above foods should not be fed to your animals.
Thanks to Ryan W for suggesting this secret.
Broken Secrets | By: Chad Upton
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Sources: Wikipedia (Theobromine), About.com, Vetinfo
License Plates and Headlights Increase Visibility to Traffic Radar
I did a previous post about how speed enforcement radar works.
There are two primary types, laser and tradition (Doppler) radar. Even if you have a radar detector, laser is the most difficult type of radar to avoid getting caught by. Laser radar gives officers a near instant reading on your speed, so you don’t have time to slow down before they get a reading on you.
Your best defense is reducing or even preventing the laser beam from bouncing back to the radar gun. The front license plate and your headlights are the most reflective thing on the front of most vehicles. If you’re not required to have a front plate in your area, get rid of it.
The next best thing is laser jamming, although it’s not legal in all places. But, if it is allowed in your area then you can buy laser jamming or scrambling units which prevent the radar gun from receiving a usable laser reading.
If laser jammers are not allowed, you have some other options. You can get plate covers and headlight treatments to help reduce the amount of laser light that is reflected back to the radar gun.
Reflectors on the back of your car are also an ideal reflector for Laser radar guns. For safety and legal requirements in some areas, you should probably keep these reflectors on your car.
I hope that some these tips will help you avoid some speeding tickets.
Broken Secrets | By: Chad Upton
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Source: Wikipedia Laser Lidar
WD-40 Ingredients and Uses
By Chad Upton | Editor
WD-40 was created in 1953 by Norm Larsen. It was originally designed to prevent corrosion caused by water — the WD stands for “water displacement.” Norm’s 40th formula was successful and that’s where the “40” comes from.
The formula is so secretive, they decided not to patent it. This may sound counter intuitive, but filing for a patent would require disclosing the ingredients.
That strategy was good for a while, but many years later, the Hazardous Communication regulation required that ingredients of potentially hazardous products be made available to emergency responders.
I did some digging and found the material safety data sheet for WD-40 (PDF).
The main ingredient is Stoddard solvent, which is also known by its own brand name, Varsol. CO2 is used as a propellant and mineral oil is another main ingredient.
It was first used to protect the Atlas missile from corrosion and it became available to consumers in 1958. Since then, consumers have found over 2000 uses that the WD-40 Company endorses (and many more it doesn’t).
There is a popular email circulating that you may have seen. It states WD-40 is primarily fish oil, but that’s not true. The email also lists a number of uses, although the WD-40 company only recommends about half of those. Some of the 2000 recommended uses include:
- Stop squeaks (doors, bike chains)
- Remove and prevent rust (lawn mower blades during off season, cookie tins/sheets)
- Remove gum, glue, ink and lipstick from fabrics and other items
- Lubricate metal parts (zippers, tools, machines)
- Loosen nuts and screws
- Cleaning (shower doors, tools, lime stains in toilet bowls)
Check out the full list of 2000 uses (PDF).
PS – The WD-40 company has an affinity for product names with numbers. They also make 2000 flushes, X-14, 3-in-one-oil and a few other products.
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Sources: Official WD-40 Uses (PDF), MSDS (PDF), Snopes
There are Three Stanley Cups
Congratulations to the 2010 Chicago Blackhawks for winning their first cup since 1961 last night.
For those who don’t know, the Stanley Cup is the National Hockey League’s playoff trophy. 30 franchised teams from Canada and the United States compete from October to June for the honor of having the players, coaches, managers and staff names engraved in the cup.
There are six historic bands (“rings”) at the top of the cup where names were engraved between 1893 and 1927. Then there are five main bands on the body of the cup where more recent names have been engraved. The historic bands never change, but the oldest of the five main bands is retired when a new ring is added to make room for new names.
The retired rings are displayed in the Hockey Hall of Fame in Toronto Canada and the cup itself is always accompanied by a minimum of one Hockey Hall of Fame representative.
After winning the Stanley Cup, the team captain will be presented with the cup. It is a tradition for the players to skate a lap around the rink with the cup held above their head. This tradition was started by Ted Lindsay of the Detroit Red Wings in 1950. He did it to give the fans a better look at the trophy.
After the winning game, there is usually a home-town parade. Each winning player is also allowed to spend an entire day with the cup. Players have baptized their children with the cup, swam in their pool with the cup and even fed their dogs from the cup.

Rings removed (retired) from Stanley Cup
There are three Stanley Cups in total. The original “cup” resembles a large bowl and is mounted to a wooden stand. It no longer has bands at the bottom and was retired after its first 71 years of service — it remains on display at the Hockey Hall of Fame. Then there are two nearly identical cups. One is the official cup and bears the official seal on the bottom, the other is a replica and remains on display at the Hockey Hall of Fame when the official cup (“Authenticated Cup”) is elsewhere.
The easiest way to spot the real cup is to look at the 1984 Edmonton Oilers engraving. Basil Pocklington’s name has been crossed out with X’s. He is the father of Peter Pocklington, the Oiler’s owner at the time and his name was added in error. The NHL claims Peter added his father’s name to the engraving list and they failed to validate that list. Peter claims it was the engraver’s error and the list with his father’s name on it was a list of people who should receive miniature replicas.
The full size replica cup does not contain Basil’s name at all.
Broken Secrets | By: Chad Upton
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Sources: Wikipedia (Stanley Cup, Peter Pocklington, NHL)
Photos: Colby Cosh (cc), Vidiot (cc)
Diesel Fuel Nozzles Don’t Fit in Standard Fuel Cars
Diesel cars are not popular in North America. But, diesel engines are fairly popular in pickup trucks and are becoming more popular in North American cars.
Although they have a limited history in America, foreign car manufacturers sell many diesel models in Europe.
Diesel engines are generally very efficient and that behind their new found demand. As diesel becomes more popular, you will likely see more diesel pumps.
This is good if you have a diesel car, potentially bad if you don’t. Diesel pumps present a slight risk to your standard gasoline vehicle — you do not want to put diesel fuel in a car that uses standard unleaded fuel.
Standard engines use spark plugs to burn the fuel, diesel engines use pressure and heat to cause a reaction in diesel fuel. That means standard engines will not burn diesel fuel. If you inadvertently put diesel in an unleaded car, the engine will stop very quickly. It’s not usually a total loss, the fuel system will have to be cleaned, filters will need to be changed and the whole process can cost as much as $600.
But, there is an easy way to avoid this costly mistake. First, diesel fuel dispensers are usually clearly marked with text and with a special color handle (the color varies by station).
Second, the nozzle on the end of a diesel fuel pump is slightly larger than a standard fuel nozzle. That means it won’t fit in your car’s gas hole, at least not that way you’re used to a pump nozzle fitting. If you notice that the nozzle isn’t going as far in as it usually does, check the pump, you might be holding a diesel trigger.
This same principle was used in the 80s when we transitioned from leaded to unleaded fuel. Leaded fuel nozzles wouldn’t not fit in unleaded gas holes.
Checkout some other gas related Broken Secrets:
- The gas arrow
- Locking the gas pump trigger (be careful)
Broken Secrets | By: Chad Upton
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Sources: Answer Bag, WTSP, Dixon Nozzles (PDF)
Photo: teachernz (cc)






