To paraphrase one of our favorite tweets: George R.R. Martin would join twitter so he could kill 140 characters. The fantasy writer toys dangerously with the fates of his protagonists over the course of the epic Song of Ice and Fire series (now an equally epic HBO miniseries, Game of Thrones). But considering each book weighs in at 500-plus pages and features dozens of overlapping, interweaving storylines, maybe he just needs to clear the underbrush once in a while. All of which has loyal readers and viewers crying out for a Twitter cheat sheet, or at least a helpful voice to guide them through the wilds of Westeros. Hey, @GeorgeRRMartin: Who you gonna kill off this week?