Chris Blow and Kaushal Jhalla are working on Swift River. If you'd like to help, get over to http://www.swiftapp.org and get started.
What is Swift?
It's an initiative that seeks to do two very important things, both of which are crucial for not just Ushahidi, but for many emergency response activities in the future. First, it gathers as many possible streams of data about a particular crisis event as possible. Second, using a two-part filter, that stream of data is filtered through both machine based algorithms and humans to better understand the veracity and level of importance of any piece of information.
Here's an intro video to our discussions on it at the Ushahidi meeting in March, 2009: http://vimeo.com/4067823