I found this quote today about fOTOGLIF service, millions of free high resolution images. Images are paired with an advertisement that makes money wherever it is viewed or published. Images are fully licensed for use on any blog, social network, and website. All registered parties share in the revenue earned from the associated advertising.

We do this by embedding advertisements directly beneath the image content whenever a photo from Fotoglif is added to a blogger page (as you can see to the left), and we share the revenue generated with the photographer, ensuring they get paid for their work…

Today we are pleased to announce we are extending that revenue share service to bloggers who use images from Fotoglif as well!fotoglif.com, Blog, Jul 2009

You should read the whole article.

This is an example