I guess I should probably clarify what I meant by the "No." above: Facebook has a large, well-tested codebase, with a huge amount of infrastructure built on an

I guess I should probably clarify what I meant by the "No." above: Facebook has a large, well-tested codebase, with a huge amount of infrastructure built on and to support PHP. It would be ridiculous to expect Facebook to migrate all of this to a different language. Re: the article itself, you'll have to wait until Tuesday.