Del.icio.us is a social bookmarking web service for storing, sharing, and discovering web bookmarks. The site was founded by Joshua Schachter in late 2003 and acquired by Yahoo! in 2005. It has more than three million users and 100 million bookmarked URLs.
Its social bookmarks manager allows to attach the sites you visit to your del.icio.us when you click “save”. And sites are also classified and ready to use. The tags make it easy and quick to classify as many things as you want. Besides, its complete and practical tools help you use and manage the resources