Revisit collects tweets related to a topic of your choosing, and displays them along a timeline. Tweets that receive more retweets or replies are displayed near the center of the stream, and have larger icons.

It’s not a static image, though: when a new related tweet arrives, it is highlighted; you can see its content and the relation to other tweets on the timeline. When there are no new tweets, a tweet is randomly chosen from the bunch.

The result is a nifty, animated visualization which can provide great background on a conference or a presentation. To make it even more attractive, you can type in a custom title and switch to full screen.