A website that ranks bookmarks to other websites that are contributed by users who like the site. Users can add comments to the bookmarks and make them private for friends and family or public for everyone. Slashdot (www.slashdot.org), Digg (www.digg.com) and Reddit (www.reddit.com) are popular bookmarking sites. For a complete list, visit www.social-bookmarking-sites-list.com. See folksonomy, page ranking, social networking and social sharing.