It's linked in the article, but if anyone is interested in more runs like these, here again is the primary Western community for TASing:

http://tasvideos.org/

And these are the two primary Western communities for human speedrunning, whose members usually post videos on Youtube and stream on Twitch:

http://speeddemosarchive.com/

http://speedrunslive.com/

Japanese communities tend not to be as coherent (to the best of my knowledge), comprising mostly independent, anonymous runners posting on http://www.nicovideo.jp/ or other sites.