On social media , untrue stories about the Boston terror attacks have gone viral quickly . One photo falsely purported to show a man who had planned to propose to his girlfriend . People believed cell phone service was shut down by authorities , but it was n't . The story spread like wildfire on Facebook and Twitter.
On social media , untrue stories about the Boston terror attacks have gone viral quickly . One photo falsely purported to show a man who had planned to propose to his girlfriend . People believed cell phone service was shut down by authorities , but it was n't . Tragedy shows `` best and worst '' of Twitter , media professional says .