Currently, the only way to download an application onto your Blackberry App World is enter all the information in PayPal to your first to make sure you have enough to pay the application itself. What if you’re an avid user of Paypal? Or maybe it’s frustrating enough to have a step in the middle?
Jim Balsillie, RIM’s CEO, announced at the BlackBerry Developer Conference in 2010 that companies can only charge you every time you download an application outside World App. This allows spontaneous purchases and gets rid of the intermediary approach Paypal.