Here Are All The Sites You Should Enable Two Factor Authentication On

Two-factor authentication is one of the easiest ways you can dramatically boost security on your online accounts. But which sites actually support it?   Fortunately, a new, community-driven list keeps a running list of all the big sites that have some form of 2FA enabled (and encourages you to nag at those that don’t).

http://techcrunch.com/2014/03/17/here-are-all-the-sites-you-should-enable-two-factor-authentication-on-and-the-ones-you-should-yell-at