You must be kidding. The first line on the event homepage says "The GNOME Conference" and the first paragraph after the menu, on the picture of gathered contributors taken at least year's GUADEC, reads:
GUADEC is the annual conference of the GNOME community, held in Europe since 2000. GUADEC 2013 will be held in Brno, Czech Republic, a city which has played host to several other successful GNOME-related hackfests in the past.
People modded you Informative for that comment. I guess I shouldn't be surprised that the slashdot crowd doesn't bothered checking facts.