I used to always shop at thrift stores. The ones where I live are actually really nice, and sell name brand clothes for sometimes less than half the original price.
And most of them are really nice!
I haven't really gone lately, but if I ever get a really big shopping spree urge, that's where I tend to go.
It's cheap, and nobody has to know where you go it from. (;
You guys are all American right? Well I'm pretty sure you're talking about charity shops. Here in Australia, we have thousands of charity shops everywhere. I love to look at the amazing stuff you find there but never can afford to buy anything (I spend money like I would eat ice-cream). I have a few things, like some bracelets and some shoes too. I love them. They are so full of interesting stuff!