So here's one theory I believe: Facebook and other large social media companies today will evolve into universal login systems eventually. We've already seen it with "Connect with Facebook" or "Connect with Twitter" buttons, but I believe this will become more and more prominent as the year progresses.

Why? Like the article states, people don't like giving out their email address. Why reinvent the login interface millions of times when you can just use one. Google, Facebook, Twitter (etc etc) already provide those interfaces, so use them!! Hell, I've turned away from betas just because their sign up form is too annoying.