Tap into the amateur photographer with cameras on their mobile phones. Convince her that she can simply point her phone at things around the world, snap a shot that's auto-uploaded to your service, and she can make cash.

You and your team handle the categorization and tagging. And/or, the photographer can come back later on her PC and categorize/tag her photos resulting in a higher profit share for anyone licensing that photo.

On most smartphones, sharing/uploading photos via e-mail and applications is intrinsic to the mobile device. Handle uploads via your own mobile application or simply e-mail uploads.