Pixazza, a Google-backed company, is set on tagging every product photo on the Net so it can be linked to ads and e-commerce. How do they do all that tagging? Crowdsourcing, silly. Even though you'd never know that just by looking at their website. In this case, Crowdsourcing is just smarter outsourcing and since it serves only their internal eco-system, it isn't worth mentioning. The company is much more interested talking about turning photos into 'buy now' buttons.