Scribd is a social publishing site, where tens of millions of people share original writings and documents. Scribd

YouTube is a place to discover, watch, upload and share videos.

Diigo is a powerful research tool and a knowledge-sharing community

Find what you want in a library near you with WorldCat, a global catalog of library collections.

Twitter is without a doubt the best way to share and discover what is happening right now.

StumbleUpon is a discovery engine that finds the best of the web, recommended just for you.

Prezi is the zooming presentation editor

“Eat to lose weight” Michel Montignac

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with fr...