User customized "New Posts" listings
I was thinking that it might be helpful if users could set postive or negative keywords for the new posts searches. Say for example, I know nothing about NFS, so I would be NFS as an excluded word and if that showed up in a thread title which had a new post I wouldn't see it. And if I set mplayer as a positive key word any threads with mplayer in the title with new posts would be put first on the list. All other posts that didn't have keywords that were in the user's filters would be put behind the postive keyword threads.
I think this could help more questions get answered because people would see more of the threads on topics they know more about.