advertisr: flickr photos that could be ads

My ClickZ column today is about integrated advertising. But I'm also working on a new one about photos on flickr (or any other photo sharing service) that could be ads. That is, they feature a brand or a product in a way that is compelling and communicates something meaningful. If you have any examples, I'd love to see them. Either post a link in comments, or send me an email.

Thanks!