Does anybody understand persitant overlay that apple is making.

I saw and read a patent on patently apple that is something apple is adding to ios. It is suppose to be widgets or something but i don't know how it works. I see short of but I was wondering of anyboody could use some clearificstion.

http://www.patentlyapple.com/patently-apple/2011/11/apple-reveals-new-ios-developments-social-networking-app.html