"What brings you to @evernotehelps today?" When someone enters a Direct Message with Evernote, they are prompted to pick one of four options to help route their request. Human agents can then more quickly and easily answer questions -- so customers can get back to capturing, nuturing and sharing ideas.

Not to be too cheesy but, imagine clicking on a few buttons and a pizza gets made and delivered. Pizza Hut has made that a reality on Twitter where people can order from a selection of their favorites and choose how to get it.