bug-buddy should list the bugzillas for Red Hat, mozilla, and as many
other projects as possible, and should be a little bit smarter about
figuring out which BTS to send the bug to.
It seems to do this, or it at least knows about RH and Ximian bugzilla.
If you want specific other stuff please report it on bugzilla.gnome.org,
or get it on the feature list...