Great news! I've been using the Prismatic app daily since it came out. It perfectly fits the job of "what's going on". I tend to skim on the iPhone and save good articles to read later (or with Pocket, another favorite).
The tech is really interesting too. High Scalability had a post this summer on how it all works: http://highscalability.com/blog/2012/7/30/prismatic-architec...