TED has an interesting video presentation of the random-stalking application WeFeelFine.org, which scours the bloggosphere for unstable emo's.
The important part is Java Applets as the choice of technology! :) At a first glance, they have chosen to discard standard swing components for getting the custom look and feel. But the use of Applets for a thick client and an opensaucy API makes me all warm and fuzzy inside. I will definitely poke inside the app and the technology stack "When I find time"
"I feel Java Applets"