Stashed in: Web Browsers, Mobile Web!
Thanks to Facebook it will now be easier to test mobile Web apps on a variety of browsers: http://developers.facebook.com/html5/blog/post/2012/04/03/ringmark-is-now-open-source/
Now THREE YCombinator startups have raised $4.20 million seed rounds.
eCPMs on Mobile are MUCH less than Desktop.
Life Before and After Cell Phones, by 20 Pixels
Facebook is making massive amounts of money on sky-rocketing mobile usage