Flickr also provides a "contact list" which can be used to control image access for a specific set of users in a way similar to that of LiveJournal. In November 2006, Flickr created a "guest pass" system that allows private photos to be shared with non-Flickr members. This setting allows sets or all photos under a certain privacy category (friends or family) to be shared.[54] Many members allow their photos to be viewed by anyone, forming a large collaborative database of categorized photos.