From now until January 12, 2010 you can get $15 back from the purchase of any two apps from BlackBerry App World. The PayPal promotion simply requires you to register on this page. From there you need to buy two apps from BlackBerry App World using your PayPal account, and you will receive up to $15 (plus taxes and fees) back from PayPal. The only catch that I can see is that the refund may take a while as it states it may be 4-6 weeks or by February 23, 2010. So if you've been looking to pick up a few premium apps from BlackBerry App World, be sure to hit up this page first and take advantage of the sweet offer.