A Billionaire Is Giving Away $9M To Twitter Followers

A billionaire offered nine-million dollars to Twitter users if they retweeted him,a nd they did, more than four-million of them. A lottery will now pick one-thousand winners to get about nine-thousand dollars each. 

The Japanese tech tycoon plans to personally notify them by this weekend. 

He calls the contest a "serious social trial" and hopes to find out later how the money impacts their life.