Dopplr has aggregated thousands of travelers data and photos to create compelling pages that have autogenerated content. These pages expose fascinating trends of travelers visiting different cities. Take a look at Black Rock City’s profile:

The spike is from the famous Burning Man festival that happens at the end of the summer, and the photo is from brainsik’s flickr.

By utilizing our Attribution and Attribution-ShareAlike licenses, Dopplr has effectively avoided the transaction costs typically associated with negotiating rights to use a photo in a derivative work.