Link: http://bits.blogs.nytimes.com/2008/11/28/tag-that-image-visual-bookmarking-sites-worth-browsing/
Title: Tag That Image: Visual Bookmarking Sites Worth Browsing
Visual bookmarking sites allow for a community of members to gather their favorite images from all over the web and create a huge photo album. Images are posted tagged with keywords by the registered users who find them. There are various sites that have distinct features.