I would say people matter more than the language. If the smartest people at Badoo are most comfortable with PHP, then that is what they should go with. Let them do their jobs in the most efficient way they know how, in this case, PHP.
The 1 million Badoo saved here is nothing compared to how much more money they made from having these people build their platform.
The 1 million Badoo saved here is nothing compared to how much more money they made from having these people build their platform.