A reader may find it hard to imagine an author as anything more than a by line and portrait on a back cover. Especially when a book is all engrossing, curiosity strikes about the person behind it. Twitter is making it easier than ever before for authors to engage with their fans, promote their works, and further express their thoughts and personalities. But with so many figures on Twitter, it’s hard to know who to follow and who to skip. Here are seven authors worth following.