First ever product placement on Flickr photos

I’ve inspired Flickpreneur concept from one of RussellDavies’s flickr photo. In this picture, he shows his books. Everything seems usual, but not finished, he added some notes to pictures. On notes, he tells a bit about book and add link to amazon with his referral (check out here). It means, if you enjoyed Russell’s photos, you just look at; you can instantly buy it on Amazon. Maybe it is first product placement ever on flickr.