It all depends on what posters want to read as there are so many threads.
If you are a newbie, the low carb forum and the success stories forum are required reading, then sub forums on anything you are interested in learning.
Then there is always the games forum and the blogs.
If you want to talk about what's going on, the general forum.
If you can't decide which forum to ask something, it's ask a question forum.
And so on. Sometimes you don't realise how big this site is!