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Prezi is the zooming presentation editor

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

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...

Google+ aims to make sharing on the web more like sharing in real life. Check out Circles, Messenger and Hangouts, just a few of the things we&#39...

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

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

Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and th...