I have a bunch of sites that are getting thousands of hits a day from images.google.com and i was wondering if there was a way i could use this traffic in a more productive manner than simply letting surfers view individual images?

Im not sure i want to block Google from indexing the images on these sites because of the amount of traffic they are actually sending me but it would be nice to make this traffic more productive if possible without having an effect on how much i get.

Anyone got any ideas on what i can do?

Regards,

Lee