It’s June 30th, which means it’s the fifth annual Social Media Day! The good people of Mashable launched the event in 2010 to “recognize the digital revolution” and it’s a tradition we’re happy to see still going strong. Here’s a list of all events going on here in Boston throughout the day and be sure to follow the #SMDAY hashtag. In the meantime, here are 10 statistics that sum up why we love social media so much.