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

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

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...

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

foursquare

The authoritative Collins dictionaries now available online. Search amongst hundreds of thousands of words and expressions in Spanish, French, German,...

Free online language dictionaries for your translations: english, italian, spanish, german, french ...

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the worl...