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...

italki is a language learning social network that connects students and language teachers. You can find language exchange partners, practice speaking...

Good old Wikipedia, great new look

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...

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Prezi is the zooming presentation editor

Find what you want in a library near you with WorldCat, a global catalog of library collections.

Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval...