Social bookmarking is a way for Internet users to share, organize, search, and manage lists of web resources. A bookmark isn't the actual resource like what you see in a file share, but a link that references the resource URL. Bookmarks contain metadata, which allows users to understand the content of a resource, without having to visit it. Typically, the metadata is descriptive text and often contains popular votes for resource quality.
The Internet today contains many different types of social bookmarking sites. They allow users to save links to web pages that they want to remember and share. These bookmarks are usually public and can be saved privately, shared only with specific people or groups, shared only inside certain networks, or another combination of public and private domains. Authorized users are allowed to view the bookmarks chronologically, by category, tags, or using a search engine.