Bollywood Megastar Amitabh Bachchan is one of the most active Twitter users who has more than 30 million followers. Senior Bachchan has shared a picture from his movie 'Hum' in which he is seen choking a guy for which he got reduced no of followers. He has shocked everyone by posting a tweet that he was quitting Twitter while blaming the micro blogging site for the sudden dip in the no. of followers. Sources say that the reason might be Shah Rukh Khan, as he surpassed Amitabh on twitter, though there is no much difference between their no. of followers.