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...

CrunchBase is the free database of technology companies, people, and investors that anyone can edit.

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections t...

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

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Create, record and share the sounds you create anywhere to friends, family and the world with SoundCloud, the world

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The ocean is divided into five main layers. These layers, called "zones", begin at the ocean's surface and extend to the s...

TeachersPayTeachers.com -- 80,000 free and priced teacher-created materials for download including lesson plans, unit plans, novel studies, worksheets...

Helps groups of people with shared interests plan meetings and form offline clubs in local communities around the world

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