Are you using Community Server? We’ve been nominated for an ASP.NET Pro Reader’s Choice award:
http://www.aspnetpro.com/ReadersChoice/
Community Server is listed on the third page under ‘Forums’. Of course it’s much more than a forums system, but we’ll take what we can get! You can also submit us for Product of the Year too!
Check it out — and more importantly vote for Community Server 🙂