The following people helped me to write this paper with a lot of suggestions, good ideas and constructive critism. They found serious bugs and problems in previous versions or helped me in another way. Thank you very much:

Darin Adler (Gnome/Nautilus), Alexander Larsson (Gnome/Nautilus), Thomas Leonard (Rox Desktop), Sven Neumann (Gimp), Havoc Pennington (Gnome/, Malte Starostik (KDE), Owen Taylor (GTK), and all I forgot to mention here.