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

San Francisco - User Reviews and Recommendations of Top Restaurants, Shopping, Nightlife, Entertainment, Services and More at Yelp

Quizlet is a lightning fast way to memorize vocabulary lists. It

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

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 ...

Prezi is the zooming presentation editor

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

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

Help build the most comprehensive human-reviewed directory of the web