I belonged to a message board for a former hobby of mine (I used to have many, many hobbies). However, once I became a father, I had to pare down my hobbies. Since cooking was so fun for me, and I have to eat anyway, I stuck with cooking as my main hobby.
I enjoy the community atmosphere of a well run forum, so I decided to find one for cooking. I literally entered "discuss cooking forum" into google, and this site popped up. I lurked for a few days, decided I liked how it felt, and decided to join.