a place for researchers to share pre-publication research, unpublished manuscripts, presentations, posters, white papers, technical papers, supplementary findings, and other scientific documents.
a community music site featuring remixes licensed under Creative Commons where you can listen to, sample, mash-up, or interact with music in whatever way you want.
Free audio and video host. Partners with blip.tv and Internet Archive. Contains user-generated video. It can be browsed by subject-specific 'Channels' as well as by media type, comments, and categories such as 'most viewed'.