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...

foursquare

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.

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...

Memrise is the revolutionary new learning community. Learn languages or just about anything for free. Powered by science, imagination and fun. Grow yo...

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...

Earthquake Geology Team at the Aristotle University of Thessaloniki

Prezi is the zooming presentation editor

Sonicbids helps bands find gigs, apply for opportunities, and get and book gigs by connecting them with the largest network of music promoters and mus...