HEATKEYS

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

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.

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 ...

Top40-Charts.com provides music charts from all over the world, like US / UK Albums and Singles, Bilboard Chart, Dance charts and more. Read the latest music news on rock, pop, country, jazz, rap, hip hop and more, get ringtones and lyrics.

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

Listen to any song in the world for free. Create free internet radio stations. Search for free mp3

Deezer is the No. 1 site for listening to music on demand. Discover more than 20 million tracks, create your own playlists and share your favourite tracks with your friends.

Historum History Discussion Forums

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

University of Cologne on academia.edu