FFFFOUND! was a social bookmarking web site that allowed registered users to share already existing images on the Internet and to receive personalized recommendations of other images. Users not registered could view these posts and the corresponding recommendations; registration was strictly by invitation. The site was established in 2007 by Yosuke Abe and Keita Kitamura of the Japanese company Tha, owned by Yugo Nakamura. The site closed down on 15 May 2017.