Taptu
There have been various DJ apps that help in mixing music and other audio data right on the device itself, but here comes something totally different. Taptu is like a full-fledged DJ app, but instead of mixing music, this one mixes all the social news in a jiffy.
Created by Taptu themselves, the developers brainstorming sessions have really done wonders for this masterpiece of an app. The developers has quite a few other apps developed, but Taptu seems to be a whole new ball game altogether.