With 2013 on the horizon, I think it’s a good time to take a look back at 2012. It was certainly a tumultuous year for… Facebook! (Yes, it was an election year here in the U.S. but there are plenty of other blogs that can comment on that front.) The social networking site made headlines all year long: switching business pages to Timeline, launching an initial public offering (and seeing its share price tank), and then struggling to monetize its business by introducing new advertising initiatives. Of course, Facebook wasn’t the only big story of 2012. Pinterest introduced business pages to tap into its growing popularity as a social network. Google+ struggled to stay relevant by introducing communities (I’m still not convinced!), while Twitter and LinkedIn both updated the look of their profile pages.