What is this new online push against anonymity?

[Christian Atheist]

It seems every website now wants you to "connect using Facebook!" And depending on the site, some are much more pushy than others, YouTube is now almost forcing it, you have to really look around to decline the option, and then you have to continue declining it every session.

"Hey everybody, connect with your Facebook, t's easy! Just look how easy it is!" Yeah but what about the part where you're connecting everything under your real name? Why not put your street address and cell number up while you're at it? What if I post something whilst drunk, or change my mind about something a couple years later? I don't want to use my real name everywhere, that's the whole point! Honesty through anonymity.

What's the deal? Who's behind this push? Do you care about having all sites you go to under your one Facebook ID? What do you think?