Wikimania 2009 was held during 26–28 August 2009, in Buenos Aires, Argentina.
Proceedings recorded, videos available
Videos of Wikimania presentations are available on Wikimedia Commons, including the keynotes, the many scheduled panels, and the lightning talks, and Richard Stallman's speech from Tuesday, before the conference started. The full schedule provides video links to most of the talks and sessions from the first two days of Wikimania, while most of the videos from the third day are not yet linked but can be found on Wikimedia Commons.
Presentations that generated considerable online discussion include:
In addition to a chaotic stream of microblogging on Twitter and identi.ca, much of which carried the hashtag #wikimania, participants produced a number of blog posts and other coverage of Wikimania 2009: