Social bookmarking is the practice of saving and categorizing web site addresses on a networked computer in a public web site for others to visit.

• Tagging information resources with keywords has the potential to change how we store and find information. "It may become less important to know and remember where information was found and more important to know how to retrieve it using a framework created by and shared with peers and colleagues.
• Robin Good calls del.icio.us a "Personalized Adaptive Knowledge Discovery, Mapping And Archival System" and rates it as breakthrough service.
• Tony Hammond et al. call social bookmarking a lean version of blogging. "Here the essential unit of information is a link, not a story – but a link decorated with a title, a description, tags and perhaps even personal recommendation points."