Excellent idea. I would suspect that there would be some images that would be of little use due to multiple reasons.
How about a discount for all images we accept for use? If that makes sense, we can mark it official.
We shall start with a $5 reward per image. The pictures will be reviews by someone in our marketing team and if it is accepted, we will reply with an e-gift certificate for the discount.
That's how I meant it to be, exactly ;)
I'll take some pictures if the greedy customs office finally decides to drip off their hands of my shirt :)