The main features I miss in the forums I know (and are present in StackOverflow) are:
- An user profile page linking to the user topics (questions in SO) and replies (answers in SO).
- Another way to stay up-to-date with replies besides e-mail (SO has the Recent view)
- Comments to replies
- A clean, white background, borderless CSS
Do you know any open source forum system which would be closer to SO in the features described above? Or I'll have to implement this?