Analysts and industry players have begun circling Research In Motion like vultures lately, but the BlackBerry maker's co-CEOs don't seem particularly concerned with the negative attention.

BMO Capital Markets this morning became the latest firm to lower its rating on RIM's stock, with analyst Tim Long saying that the company is too reliant on Verizon Wireless, which accounts for some 30 percent of RIM revenue, and that the Storm 2 doesn't match up to its touchscreen competitors. And while BlackBerry remains the king of the U.S. smartphone, it's facing a daunting threat from Apple's iPhone and a seemingly endless deluge of Google Android phones.