I am so excited because today, i am receiving some free costume jewelry today after using my $10 credit from copious.com. This is a really neat site, I like it a lot and I will probably shop there again in the future. There is some really expensive stuff, but a lot of cheaper stuff too (meaning that you should be able to find something for free with your signup credit.
This one is pretty awesome also, they have some really great prices on some really neat stuff. They occasionally have a "100% off price" items, they're really great catches!
This next one is very similar to the one above. I really like this one also! You answer questions in the beginning and they offer items based on your answers (and then you can browse everything else!)