Research in Motion, the manufactures of the struggling BlackBerry, are pinning their hopes on a high-profile Super Bowl advertisement to provide the marketing push needed to launch their new BB10 software.

BlackBerry manufacturer and parent RIM has revealed that its lead marketer in Europe, Sarah Probert, has left the company just three months into the BB10 campaign that many believe will make-or-break the brand's fortunes.

In a staunch defence of his company, Research In Motion chief executive Thorsten Heins says that all is well with production of the new BlackBerry and the health of the company at large.

Research In Motion, the manufacturer behind BlackBerry smartphones, is in very deep trouble as it posted a major loss, cut 5000 jobs and delayed the release of their BB10 operating system until early 2013.

Social network Foursquare, where users "check-in" to their physical location, has announced a partnership with credit card American Express to offer unique deals and discounts to shoppers in the UK.