The source code of Facebook (a popular social networking website) homepage was exposed on the Internet yesterday due to server misconfiguration. The following is an unofficial response made by Brandee Barker from Facebook:

Some of Facebook's source code was exposed to a small number of users due to a bug on a single server that was misconfigured and then fixed immediately. It was not a security breach and did not compromise user data in any way. The reprinting of this code violates several laws and we ask that people not distribute it further.

More on this issue:
Techcrunch: Facebook Source Code Leaked
Digg: Facebook Source Code Leaked - Actual PHP Code

[tags]facebook, php, web development, source code[/tags]