Most of the dollar stores do not accept coupons (Dollar Tree definitely does not)
Most of the dollar stores do not accept coupons (Dollar Tree definitely does not)
But for a typical salaried employee who's not motivated to start a business and who just wants something fun to do on the weekends, sure, it works great.
My wife coupons, and I don't remember the last time we paid over $.25 for a gallon of bleach, either...
The other danger: you see a coupon that excites a desire for a product you didn't previously think you wanted. Unless you have unusually tight control over yourself, you'll find your buying more stuff (http://paulgraham.com/stuff.html) you don't actually need.
Reading Kevin Kelly's quasi-blog Cool Tools: http://www.kk.org/cooltools/ also offers this danger, but it also very occasionally makes me find something I've always wanted and didn't realize, like the Best Book Stand Jasmine: http://jseliger.com/2010/09/04/highly-recommended-the-best-b... , which I use almost every day.