I have to admit, I very rarely notice major trends - in anything. Sometimes I'll pick up on what types of threads are popular in OD or here in BDD, but that's about it. I remember when I first started posting, I was posting about a wide range of drugs, so the ability to discuss them was there, and people were using it. OD was here, PD, ED, BDD. The only difference I notice now is the layout/skin and the friendlier atmosphere (that, apparently, is relative since some think all the staff members a bunch of assholes).
And I need to make a correction: I originally joined in 03, not 02.