http://www.archlinux.org/packages/community/i686/gg2/
Homepage isn't the right anymore except if you want to get infos about oral surgeon or want to get tips for carpet cleaning. Searching a bit i found the sourceforge.net homepage : http://sourceforge.net/projects/ggadu/ -> Last code commited : 1355 days ago Also there is alternatives in pidgin or kopete, surely others ++
