People can't use screem because of an error in the postinstall. The script doesn't follow the standards we use nowadays with gnome packages.

Some notes:
- gconf schemas are registered in root's user profile instead of global system database
- gconfd-2 is not sent a HUP signal to notify it of new schemas
- update-desktop-database is not run, this needs to be run when a package has a .desktop file that contains a MimeType line (screem has)
- gconf schemas should be unregistered on pre_remove()
- scrollkeeper .omf files exist, run scrollkeeper-update on post_install() and post_remove()
- scrollkeeper files exist, source will likely try to run scrollkeeper-update, resulting in a scrollkeeper db included in most packages nowadays (screem not yet but will in future. Run generic scrollkeeper-update removal stuff before calling configure in PKGBUILD

Examples of these points can be found in most of the gnome packages. Epiphany is a good example of all these things.