The ability to change your image is very difficult, and it is almost impossible to do it around people you're close to.  Changing you're identity on social media such as Facebook or Twitter is the same way.  How I represent myself on Facebook or Twitter sticks.  I cannot just change my statuses and people just think that I'm permanently different because it would be like acting like an ass, someone calling you out on it, and you suddenly change into a whole new person when you really haven't.  My goal when I post on social media is to state something POSITIVE that happened to me while not offending anyone.  I never whine about negative things and I try my best to post everything else in a tasteful manner.  Two of my best friends were boyfriend and girlfriend and they broke up after a fight.  They both went onto twitter immediately and pretty much had an entire fight publicly.  The problem was that they are both great but their representation to everyone else says otherwise.  Personally if I was an interviewer I would probably not look at social media because it speaks lies both ways, positive and negative, and I would rather base my view of a person off of how I see them to be in person and not on a website.