Legendary US investor Warren Buffett has joined Twitter and could become one of its most followed. Users are flocking to follow him. Within ten minutes of signing up, 10,000 were following him and three hours later the numbers were climbing past 140,000.
His first tweet, under @WarrenBuffett, was "Warren is in the house". Mr. Buffett is famous for shunning new technology. Despite the surge of followers, Mr. Buffett has not been active in seeking people to follow, with his page showing he was following no-one after three hours.