This week Twitter enabled the search of every Tweet in the history of the Twitterverse. This means that everything you've ever Tweeted is searchable. They weren't before now, not in their extreme entirety, now they are, for the first time ever. For most people this won't be an issue - they've never said anything embarrassing on Twitter, ever. But you - oh my goodness. You need to delete more than your fair share of Tweets, and you need to do it right now.