Congratulations, Facebook: You may have found a way to annoy your user base even more than Google did with Google+. Facebook’s decision to strip the chat functionality from its mothership mobile app and instead force users to use the separate Facebook Messenger app to chat with friends has predictably led to a big backlash as iPhone owners have been bombing Facebook Messenger with one-star reviews in the App Store for the past several days. Predictably, many of the one-star reviewers have trashed Facebook for making them download the app in the first place, as they said they were perfectly happy chatting with the standard app. “When will Facebook reactivate chat within the Facebook app?” asked one. “I absolutely refuse to