FFFFound

 FFFFound  was an image collection silo used for bookmarking and sharing images found elsewhere on the web.

FFFFound accounts have feeds of their posts, e.g.:
 * http://ffffound.com/home/adactio/found/feed

Launched in June 2007 FFFFound created a community around the curation of art and other imagery. It was invite-only for its entire ten-year run with each user only receiving a single invite.

On 2017-05-12 founder Yugo Nakamura announced on twitter that FFFFOUND would close on May 8, 2017.