I owned the E-P1, and I actually own the first forum based on the PEN series cameras. The E-P1 was a very nice camera, and although it didn't have all of the same features as the E-P2 such as the attachment for the EVF and a few new art filters, it was really a great camera. I want to get another one again someday, hopefully soon. By the way, here's my forum.
E-P1.net - A Micro Four Thirds Community