Better content sharing
When I'm consulting Web pages, reading RSS feeds, checking Facebook or Google+, or whatever else, I often want to take notes or send links to others. On my iPad, this involves using the cut/paste mechanism and switching apps via the homescreen, and inevitably I find it takes multiple attempts. On the Nexus 7, there's an integrated “Share...” function in every application that gives access to pretty much every other app to which clippings can be sent. Easy!