In December, Facebook made a series of bold and controversial changes regarding the nature of its users' privacy on the social networking site. The company once known for protecting privacy to the point of exclusivity (it began its days as a network for college kids only - no one else even had access), now seemingly wants to compete with more open social networks like the microblogging media darling Twitter.
In an effort to add one more story to the list of reasons why Facebook already rules the world and can stop trying, we find that Facebook is the social-network-login of choice by nearly 2-to-1.