Tomboy-leaftag is a Tomboy plugin that allows you to tag notes using 
leaftag.

This is version 0.2.

It requires leaftag and leaftag-gtk from http://www.chipx86.com/wiki/Leaftag 
and leaftag-sharp from http://www.iki.fi/juri/store/dl/leaftag-sharp .

For it to be actually useful, you should additionally probably use deskbar
and have the some extra gconf keys so that gnome-open knows what to do with
Tomboy URIs. Run something like this:

gconftool -t string -s "/desktop/gnome/url-handlers/note/command" "tomboy --open-note '%s'"
gconftool -t bool -s "/desktop/gnome/url-handlers/note/enabled" "true"