People are resistant to change. We find solace in our daily routines. And because social media sites have become a part of that routine (for better or worse) even small changes to those services can effect us. So while not every change is bad, and most (if not all) will have their naysayers, some changes are just harder to swallow than others. Here are 4 recent (and very public) examples of changes that caused the respective communities to lash out.