KeyTweet wants to make sense of your Twitter stream:

KeyTweet rummages through your Twitter stream and tries to figure out what the most interesting links are — things that many people are talking about. At first glance, it looks like it does a pretty good job: two of the things it highlighted for me are wave and marriage, and that seems about right.

The interface is straightforward, if a little unpolished: click the Sign in with Twitter button, authenticate yourself to Twitter, and KeyTweet works its magic. It’s fast and easy.

I love it when software is clever, and sorting through vast streams of data offered by services like Twitter is only going to get harder as time goes on. If KeyTweet’s relevance stays good, and maybe gets supported directly in some Twitter apps, I can really imagine it catching on. In the meantime, watch for this space to heat it. It’s brilliant.