On one gamer forum that I'm a regular member, there are always the same five people online everyday talking to each other. it was really cool to see all these people there daily. Sometimes, I see new people there, but mostly it's just a handful of regulars. I like this idea of having a core group of loyal posters who come to the forum daily but think it would also be detrimental to rely on just so few people, because what happens if they start to drift away from the forum, then the site becomes dead.