This is a great concept, sharing artwork the world over. A taste of everybodies talent for the sake of art and enjoyment, no competition. Don't get me wrong I love competition. However sometimes it is nice to share with people in a relaxed comfortable environment. I think that is what Sketchtravel is all about.
Check out the website and promotional video, even some of the sketches that have been drawn.
Boy, I wish somebody I knew would get something like this going, perhaps on a smaller scale.