Meghan McCain says we need to take back Twitter from the creepy people—like Karl Rove, "America’s Toughest Sheriff," and the other undesirables who now follow her every Tweet. Karl Rove follows me on Twitter. That’s creepy. I joined Twitter a few months ago; so far, it has been a liberating way to transition from political to personal blogging. It’s allowed me to share the less-serious aspects and humorously uncensored moments of my life. But there’s also been a downside: I am now being followed by Karl Rove, and my local sheriff, and God knows how many other political pundits. We...