Taken right from the stickied thread at the top of the Alt Crypto sub-forum:
Newbies, NEVER DO BUSINESS WITH OTHER NEWBIES, EVER. There are plenty of veteran members to do business with and ALWAYS use escrow. If you're a newbie and you're doing business with another newbie, there's a 100% chance that you will get scammed (or you're a scammer yourself). I can not stress this enough.. just work with people who have been here at least a year.