Revisit
is was a real-time visualization of the latest twitter messages (tweets) around a specific topic. In contrast to other twitterwalls, it provides a sense of the temporal dynamics in the twitter stream, and emphasizes the conversational threads established by retweets
and @replies.
Currently revisit is down, due to changes in the twitter API which would require some serious re-engineering. (Learn more)
You can find more info about the project here, and here is how it used to look:
revisit see5 from Moritz Stefaner on Vimeo.