I heard a rumor a while back that Facebook Chat was rewritten in C++... but I can't seem to find anything to verify that. Do you know if it's still Erlang?
No idea. Sounds like the kind of thing that gets started based on a misunderstanding like someone saying "we wrote that in C++" in reference to part of the chat system. Either way, my point was that facebook isn't a PHP shop. Erlang/C++ or just plain C++, neither is PHP.
