I always came back again and again to tnation and the forums because it was never plastered with random ad-cklicks etc. Now I see google ads running in the forum.
I know it's not free to run a forum this size, but please be careful of not having people disappear from the forums because of going down that line. It might be doing a disfavour to yourself in the future.
It's your choice of course, but I'd recommend to think it over again.