"Flickr's designers also displayed a shrewd grasp of the essence of Web 2.0 thinking - namely that the big rewards come from making it easy for other developers to hook into your stuff. So they were quick to publish the application programming interface (API), the technical details other programmers needed to link into Flickr's databases. This then made it easy for bloggers and users of social networking sites to create links to their Flickr 'photostreams'. The results are clear for all to see." The Guardian, 2008