Before I ordered my first GP2x in November (arrived December), I was looking on the forum, but didn't register initially. I wanted to make sure there was enough available to play on it first, and forthcoming developments. I think I heard about the GP2x on CraigX's site - gp2x.co.uk and read up about it.
I got my first GP2x, had many issues with it, got my money back (from gp2x.co.uk), bought another one March as I recall (gp2x.co.uk) - been using that one since. Registered as a member in January, while I was "between GP2x's".