What purports to be an interview with an anonymous Facebook employee, shedding some light on the inner workings of Facebook, technical improvements, privacy, and the more unusual dealings with its millions of users:
How do you think we know who your best friends are? But that’s public knowledge; we’ve explicitly stated that we record that. If you look in your type-ahead search, and you press “A,” or just one letter, a list of your best friends shows up. It’s no longer organized alphabetically, but by the person you interact with most, your “best friends,” or at least those whom we have concluded you are best friends with.
I’m not sure when exactly it was deprecated, but we did have a master password at one point where you could type in any user’s user ID, and then the password. I’m not going to give you the exact password, but with upper and lower case, symbols, numbers, all of the above, it spelled out ‘Chuck Norris,’ more or less. It was pretty fantastic.
I found a fake account created from Berkeley that used the profile picture and information from the brother of one of my very good friends. We looked up the guy who created the original profile, and he had never ever heard of him, never ever met him, obviously had never seen him. But this guy had evidently added him as a friend, and sadly he accepted it, but literally stole all of this guy’s information, created a fake account, and was communicating with himself from the fake account. He was writing on his wall and posting back to the “other person’s” wall. We found out the guy actually had about fifteen fake accounts that he created, stealing other users’ pictures and information to create the accounts, and was actually communicating back and forth with himself. Just to try to make himself appear cool, I guess?
The unnamed Facebook employee also says that they're working on something named Hyper-PHP, which will compile PHP (which Facebook is written in) to machine code, which, they claim, will reduce CPU usage by 80%.