Yesterday Russ "officially" announced a service that he and Anthony are developing, called tagsurf, a "tagging-enabled hyperforum." Russ showed me one of the very first revs when I was visiting last month. It is a very cool idea: create loosely-coupled threads (or "forums"), where the coupling is determined by tags, the new new thing that's been making the rounds for the last few weeks in the blogsphere (this Salon article has a good summary on tags). Because you can attach any number of tags to a message, you are actually enabling multi-dimensional browsing on topics, for very little extra effort. (MetaFilter started doing something similar in January).

Anyway, go and give it a try. And congrats on the release guys!