bookmarking is mode in which one can submit the meta tags, description and specific keywords through which the google brings those used keywords on high rankings
Social bookmarking is a method for Internet users to organize, store, manage and search for bookmarks of resources online. Unlike file sharing, the resources themselves aren't shared, merely bookmarks that reference them.
n the context of the World Wide Web, a bookmark is a locally stored Uniform Resource Identifier. All modern web browsers include bookmark features. Bookmarks are called favorites or Internet shortcuts in Internet Explorer, and by virtue of that browser's large market share, these terms have been synonymous with bookmark since the first browser war.
Social Bookmarking is a way to promote your website, to get Do follow link back to your website, to get your website indexed. It is a best way to generate visitors on website.