As much as I'm able.
Funny story--and true!--is that the first forum community I joined was the WWII board at The History Channel's website. LOVED discussing WWII, especially naval actions, and was hooked on the channel at the time, so I thought I'd try out the board for some interaction. I was young and pretty cocky then, but I met some good folks who helped straighten me out and who I was able to engage in good conversation with. Helped me grow up a bit, actually, as I was a young kid talking with a bunch of old salts, and usually holding my own pretty well.
I miss that place, but I eventually just got too busy for it and moved on to other things. Don't know if it's even still there these days. I'll have to check sometime. I'm sure all my old posts are long gone, but still....