I would love to have an RSS feed for new messages in each forum. To one-up that, it'd be even better if there were a way for users to create an aggregated feed with only the forums we care about. For instance, I might be interested in C# and ASP.NET forums while someone else might be interested in Visual C++/MFC, ATL/WTL/STL, and (Managed) C++/CLI forums. This capability is in most popular forums now-a-days.
Michael Flanakin | Microsoft Consulting Services www.michaelflanakin.com