RIM's former co-CEO Jim Balsillie had proposed using BlackBerry Internet Service (BIS) servers to provide data for non-BlackBerry hardware shortly before he resigned his position, new leaks uncovered on Friday. The method outlined to Reuters would have let carriers offer Android and iPhone devices with cheaper data plans that limited Internet access to chat (possibly BlackBerry Messenger) and social networks, much like entry BlackBerry plans do today. RIM would presumably have made money from leasing access to carriers eager to get more smartphone customers and offlo