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

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Plan a trip, book cheap airfares, purchase airline tickets, make hotel reservations, and find vacation packages, car rental & cruise deals at the travel agency rated #1 in customer satisfaction.

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

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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.

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

TripAdvisor - Unbiased hotel reviews, photos and travel advice for hotels and vacations - Compare prices with just one click.

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.

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