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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...

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

Music, movies, TV, shows and now friends. Get connected on iTunes 10.

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

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

San Francisco Chronicle at SFGate

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

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...

Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.