I started with FGI in '02. In those days I could spend hours just on the Clubmaking sub-forum. Then about 10 years ago the golf industry took a nose dive and interest in the golf forums did the same. Before that there seemed to be a lull in forum activity at the end of the golf season and would pick up later in the fall. This was often referred to as the "silly season" and forum activity peaked for months. For the past 5 or more years I just haven't noticed it doing that.
I think my first golf forum was on the old Dynacraft website. That is where I discovered FGI and GEA. Man, I really miss the old FGI.