One immediate improvement over the iBone.
As pointed out in the article, the Nexus's battery is removeable, so a dead battery doesn't mean a dead phone and a wait for a replacement unit, unlike the iBone. It also means if you have two batteries (many early smartphone users will remember this one!) and keep the spare charged then you can swap them and carry on working/playing/posing, whereas with the iBone you have to put the phone down to charge and go back to interacting with real friends.....