Finally, ex-Microsoft CEO Bill Gates has jointed twitter, and he’s already got 152,946-plus followers. To kick off his tweets, he posted this message approximately 13-hours ago: “‘Hello World.’ Hard at work on my foundation letter – publishing on 1/25.” Click here to become friends with him.

Finally, ex-Microsoft CEO Bill Gates has jointed twitter, and he’s already got 152,946-plus followers. To kick off his tweets, he posted this message approximately 13-hours ago: “‘Hello World.’ Hard at work on my foundation letter – publishing on 1/25.” Click here to become friends with him.