[xg15]

Reminds me of the "create an account or login with Facebook/Google/etc" UX you see on many sites.

The promise was that services could outsource their account management to e.g. Facebook, users wouldn't have to deal with dozens of accounts and Facebook gets some more juicy user data to analyse. Win-win-win, right?

Except of course sites don't want to outsource their account management to anyone. User accounts are valuable, so every company who can manage to do so in any way pushes their users to make an account. They also want to keep maximum control over those accounts.

However, what sites would like very much is to have their user accounts associated with a Facebook or Google identity.

So what happens in the end is that the buttons really mean "login with Facebook and create an account" - which means for UX and privacy of users, it's the worst of both worlds combined.