by Edie Melson @EdieMelson For writers today, an online presence can mean the difference between success and failure. But if we’re not doing it right, we may be our own worst enemy.  [tweet_box design="default" float="none" inject=" #Writing #socialmedia #BRMCWC"]10 Ways to Destroy Your Social Media Presence - @EdieMelson on @BRMCWC[/tweet_box] You…