3.1 SOCIAL BOOKMARKING
Social bookmarking is an internet tool that lets us organise,use and share information more efficiently.It works in a way that is similar to the favorites option of a browser program,but with an extra adventage:All of our content is stored in the cloud so we can access it from any location in the word.some of the most popular social bookmarking applications are:

1.DELICIUS:
Is a service that lets us save our favorite web pages along with a description and a list of key words for aesier classification.We can share this information with other people and see the content that they have bookmarked.

2.DIIGO:
Defines itself as a multi-tool for knowledge management. Among other funtions,it lets us bookmark the pages that we visit and create a digital library in the could,with links,notes and images.We can access this library from any location and select the information we want to share.Diigo is also available for mobile devides.

3.EVERNOTE:
Provides a convenient workspace where we can collect information by capturing articles and images from the internet.Then we can add notes and share information with other people.The application also has a seach function for finding specific details in the content that we have saved.