Perhaps you don't have a repository that I do.
Here is a copy of my apt list.

Nokia-N800-:/etc/apt/sources.list.d# ls
hildon-application-manager.list
Nokia-N800-:/etc/apt/sources.list.d# cat hildon-application-manager.list
deb http://catalogue.tableteer.nokia.com/certified/ chinook user
deb http://catalogue.tableteer.nokia.com/non-certified/ chinook user
deb http://catalogue.tableteer.nokia.com/updates/chinook/ ./
deb http://repository.maemo.org/extras/ chinook free non-free
deb http://maemo-hackers.org/apt mistral main
deb http://idefix.go-nix.ca/nix chinook pidgin
deb http://repository.maemo.org/ chinook free non-free
deb http://maemo-hackers.org/apt chinook main
deb http://repository.maemo.org/ chinook free non-free
deb http://browser-extras.garage.maemo.org/browser-extras/ chinook browser-extras
deb http://www.anderenen.de/repository chinook free