Today a newly created blog, named Facebook Secrets, posted Facebook's homepage source code online for everyone to see. According to TechCrunch, Facebook has responded to the leak saying that, "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."
It's not immediately apparent what effects this leak will have for Facebook, but you can bet that the company isn't happy about it and is working to make sure that this doesn't happen again. As we speak, I am sure that hackers are poring through the code looking for exploits in Facebook. Hopefully this won't hurt Facebook's security reputation too much, especially since there are already enough concerns with the privacy of information on social networks.