Science TechnologySkype-killer? BlackBerry maker unveils BBM version 7 to call free globallyM ElahiDecember 18, 2012July 4, 2014 by M ElahiDecember 18, 2012July 4, 2014 London: In an effort to regain confidence of users, Research in Motion (RIM) has unveiled BlackBerry Messenger (BBM) version 7 that now allows users to...