To answer your question, I guess it depends on what it is you need to know.
I read Sailnet on a fairly regular basis, and I do post various questions on occasion, and I usually get good answers. There might not be a whole lot of activity within the S2 forum itself, but Sailnet overall is pretty active, and is usually a pretty good source of information for general interest sailing related topics. Most things I need to know would apply to any make or model, so I wouldn't post them here in the S2 forum. My boat has a saildrive engine, so when I have a saildrive question I post them on the Yahoo saildrive owner's group board rather than here because that seems to be a better source of information for that specific topic. I know there are many other internet forums out there, some are geared more towards cruising, or racing or whatever. If you could tells us a little more about what it is you need to know, I am sure someone would try to point you in the right direction.