I consider this my "home" board even though I've only been here for 6 months. I post here the most often and feel like I know you all fairly well.
I occasionally post on the Pets board and rarely on GetP, ML, CE&P, Entertainment, and S&B. I tried to get more involved on ML, but there are just too many posts to keep track of all day long. Also I felt like I got lost in the shuffle with all the hundreds of posters there.
This would be my home board. The only other board I consistently post on is GotP but I'm starting to post more on MMM. I lurk on ML sometimes but don't really post there because half the time I can't keep up with the conversations or I don't have anything to add. I also very occasionally lurk on G&G but every time I do half the posts are Doctor Who related and I'm just not interested. *shrug*