Out of curiosity, what sort of things would bring down a site as big as Facebook like this? I'm sure they have many checks, balances, and methods of ensuring a code change wouldn't impact the site (to this extent) - and they are distributed across many data-centers, so I wouldn't think that would cause it to go down.

Looks like it's back up, we can all be social again.

"Again" seems to be a quite loaded headline. I don't use facebook, is this a common occurence?

All things considered, it's remarkably rare that the general consumer facing parts are down.

Developer APIs are something else.

teach me master.

a new spy algorithm is going up