Those naughty Adsense affiliates. The search engine company sent a digital picture frame, and a holiday card, to high-earning sites, which carry Google text links in exchange for a cut of the advertising spend. Only to have them load up the gift with porno images. So, let's get the process straight: webmasters post up linkbait articles, like top tips for geek weight-loss, exploit advertisers who think they're promoting their wares next to relevant content, and then abuse Google's generosity.