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...

Prezi is the zooming presentation editor

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

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

foursquare

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

Academia.edu helps academics follow the latest research.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the worl...