When I visit the SP forums, the first place I go (and often the only place I go) is the "Updated topics" link to see what has changed. Right now I'm learning about web site development (even though I have been maintaining sites since around 2001) so I have no specific forums to look at.

However, my suggestion is to have the ability (perhaps via my profile) to choose to exclude certain forums from the updated list. This morning, for example, I have seen 11 pages of updated forum threads, but a significant number of these are from the "introductions" forum which I generally never read. So it would be nice if my profile would allow me to exclude this forum, so the list of updated topics would be much shorter.