== Flickr runs away from CC Content == 

 I am surprised this hasn't been introduced into the article. 
 https://blog.flickr.net/en/2014/12/18/an-update-on-flickr-wall-art/ 
 https://www.flickr.com/help/forum/en-us/72157649408582487/ 
 http://creativecommons.org/weblog/entry/44586