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

250 million+ members | Manage your professional identity. Build and engage with your professional network. Access knowledge, insights and opportunities.

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 ...

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.

Academia.edu helps academics follow the latest research.

Join BookLikes to create your own book blog. You can collect books, discover new ones, win giveaways, and stay connected with other book lovers.

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

Find articles, journals, and research from 6,500 publications at HighBeam Research. Find newspaper articles, archives, journals, magazine back issues, reference books, and more.

Readcube is a free, simple, academic software and reference manager for researchers. Read Cube helps researchers organize, annotate and stay on top of new research literature.

Open access articles are published for free to read. Index your published manuscript in openaccessarticles.com for free.

DeepDyve is the largest online rental service for scientific, technical and medical research.