http://www.erowid.org (http://www.erowid.org)
I run a board for enthusiasts of legal research chems such as 5-MeO-DiPT and other things that came out of Dr. Shulgin's basement.
http://pub38.ezboard.com/bthechemicalexchange (http://pub38.ezboard.com/bthechemicalexchange)
As for the online suppliers, some are scams, and some are not. The DEA will not fuck with anyone ordering a gram of foxy from a website... but if you order 100 grams it might be a different story...