First Suggestion:As discussed on IRC today, I think the mouseover "Thread Previews" should be scaled according to user rank (if possible). For example... a guest doesnt get a post preview, and a visitor gets about 50 or 60 letters. A journeyman might get 100, with Moderators and up being able to see 200 or so characters.
(ps: Andrew, dont forget to convert line breaks to *spaces* not just remove them... otherwise the words run together!

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Second Suggestion:Integrated PM system. It would sure speed things up, rather than having to rustle up some other users email address to drop them a line, even when we can SEE that they are on the forums and active. I think it would be a great way to get information between users, and would benefit the community.