Twitter is about to become even more pervasive (and potentially more annoying, as if such a thing were possible). Starting next week on The X Factor, viewers will be able to vote for their favorite performers via Twitter. Fans have been taking to Twitter to express their opinions during live TV events for years. But now they can actually affect the outcome of competition on a show by voting for contestants they feel should stay and those who should get the boot. Twitter’s blog explains how. To vote, follow @TheXFactorUsa. Then submit your vote privately with a direct message. All votes are sent directly to The X Factor to be counted. Tweets, however, do not count as votes — only direct messages.