They are on a mission to make free and open educational materials: There are so many great minds in the human-computer interaction and interaction design community and they want to empower these authors to reach all their interested readers around the world.
Their currently featured chapter (one out of nine) is an authoritative overview of Social Computing by Tom Erickson – veteran researcher at IBM Research Lab. It includes 9 HD videos filmed in Copenhagen and commentaries by renowned designers/researchers like Elizabeth Churchill from Yahoo! and Andrea Forte.
Read chapter (and watch videos)