You may save your most visited or useful websites and links are favourites in the computer you use. This all fine and well until you are working somewhere else and then cannot access them.
Social bookmarking tools allow you to save your bookmarks on their server and allow you to access them any time. In addition you can also share them and allow followers to comment. This provides a powerful research tool and a knowledge-sharing community. Below are a few of the social bookmarking tools that are available.
Diigo enables you to save all of your bookmarks in one space and also add annotated notes using the highlighter or sticky notes tools.
Research: annotate, archive, organise
Sharing – build a personal learning network
Collaborate – create a group knowledge repository
Delicious is a similar bookmarking tool.
Pinboard another social bookmarking tool http://pinboard.in/tour/