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LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.

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 ...

PicBadges is a social network, allowing people and businesses to create and share ideas, activities, events, and interests on top of profile pictures.

Discover our online network for research and download the free desktop tool that indexes and organizes all of your papers. Easy reference management and data sharing from Mendeley.

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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've been working on.

The most comprehensive people search on the web. Pipl finds high-quality results in pages that cannot be found on regular search engines. Free People Search.

Princeton University is a vibrant community of scholarship and learning that stands in the nation's service and in the service of all nations.

Docstoc is a community for people to find and share professional documents. Find free legal documents and free business documents.

Academia.edu helps academics follow the latest research.

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