I could be wrong, but paying users through advertising revenue is exactly the same business model employed by faucets.  As such, I can't imagine the payouts for this being vastly better than faucets.  It even says in the article "payouts are typically very small".  Also, if users are embedding the images they upload directly onto forums and social media, where do the advertising revenues even come from?  Surely people viewing the images would have to visit the page with the ads displayed on it for it to be profitable?