Plugin for selling skimmed traffic from pictures

I have about 50 WordPress based blogs, and all of them have pictures that are not connected to any outside url. After clicking on a picture a person just goes to a bigger version that displays in a browser.

I would like to find a plugin so I can connect all these pictures to an outside url, so the traffic gets sold to a traffic broker. I could be getting 1-2 Dollars per 1000 clicks.

Do you think something like that exists?

Thank you.