Flickr was a website on the Earth Internet in the 21st century.
After a wave of Shakri cubes arrived on Earth, people posted pictures of them on Flickr. (TV: The Power of Three)
Adrian Greenwood, an employee of Rosemary Kizlet had an account on Flickr; Clara Oswald found his profile using face-match in order to discover where Kizlet's offices were. (TV: The Bells of Saint John)