How Blackberry, not Twitter, fuelled the fire under London's riots

``But while Twitter and Facebook became the venues for public protests around public spending cuts it is the affordable BlackBerry handset and its near free BlackBerry Messenger network where group chats take place, which appears to have fuelled these riots. To communicate, BBM users have to exchange their phones' PINs, making their messages private, but PINs can be spread by any means -- including, of course, Twitter and other social networks -- but also via (still non-public) SMS.''