Now on Twitter: Rupert Murdoch

Rupert Murdoch on Twitter? It seems unlikely, and many, including Murdoch biographer Michael Wolff, insist the account that popped up yesterday is fake. But none other than Twitter's own executive chairman, Jack Dorsey, tweeted last night: "With his own voice, in his own way, @RupertMurdoch is now on Twitter." The first tweet was posted 19 hours ago, and the account already has nearly 20,000 followers. It also has the blue and white "Verified Account" checkmark next to Murdoch's name.

What has he written about so far? The Steve Jobs biography ("interesting but unfair. Family must hate."), Ron Paul ("Huge appeal of libertarian message."), St. Barth's ("too many people."), Alexander Hamilton ("Best man never elected president."), The Descendants ("Star Geo Clooney deserves Oscar, maybe film too."), and family outings ("Great time in sea with young daughters, uboating."). But, the Guardian notes, not everyone is enjoying Murdoch's 140-character insights: In reference to the News Corp. phone hacking scandal, former deputy prime minister John Prescott tweeted, "Welcome to Twitter ... @rupertmurdoch. I've left you a Happy New Year message on my voicemail!" (More Rupert Murdoch stories.)