Deal-of-the-day provider Groupon has just released an application to help out BlackBerry users. Available in the US and Canada, the Groupon app allows you to find local deals and display coupons right on your device. Use the app to display local deals, then bring up the coupon to show to the retailer. You'll never have to print another coupon again to snag a deal. Groupon for BlackBerry is totally free and is available in BlackBerry App World.