Things I really like are:
Remembers where in each thread I have read upto.
Allows me to Ignore Categories / Threads that are not of interest
Excellent editing tools for reply, maximising the help that I can give in the time that I have available
The Image Upload facilities are First Rate, although not particularly relevant for SQL Subject matter (and I do worry that people will upload Screen Shots of SSMS listings of data etc. instead of Sample Data which people here can use to simulate a user's problem ... we'll see on that one
I haven't really looked at it closely, but it seems to me that the "open"and "uncluttered" formatting style of this forum would mean that it would be suitable for an initial BLOG-type article, with follow-up discussion. I find that long posts read really easily ...
Posting date is good too - mm/dd/yyyy is ambiguous and non-intuitive for those of us on the right side of the pond!
Showing change-history will be good for those prats that think they should delete their post after getting an answer, thereby mucking up the thread.
I expect that TAGs will help slice & dice the threads ... and the fact that trusted members can edit them to tidy them up should help with consistency, particularly for Newbies who can't be expected to know best-practice. A bit of effort by the regulars here should mean that Google indexes the site well, which bodes well for Graz retiring rich after selling SQL Team on eBay