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

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 friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

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

Prezi is the zooming presentation editor

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Academia.edu helps academics follow the latest research.

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