GNOME 2.x Desktop
Ours are mainly because we feel it is faster and looks a lot prettier than any other, and most major free softwares are already or are getting more integrated with GNOME in a near future (ex.: Galeon, GAIM, …).
It is also particularly well integrated and up-to-date into .
 currently 2.14 as of this article
This article was first written in November 2003 for the BeezNest technical website (http://glasnost.beeznest.org/articles/94)