Wired: “Amateur Programming Error Exposes Facebook Code“:
“Owing to a misconfigured server, Facebook exposed its homepage code to what the company called “a handful of users” over the weekend. The leaked code was promptly posted on a new blog, Facebook Secrets, for all of the internet to see.
One group that should be quite happy with the leak is ConnectU, the company currently embroiled in a lawsuit with Facebook which alleges that the latter stole code from the former. If the alleged code happened to be on Facebook’s front page, ConnectU’s case just got a whole lot stronger, though ConnectU hasn’t said anything to that effect.”

UPDATE: Wired: “Facebook DMCA Notices Silence Digg and Google.”