tagging shortcuts / utilities

Productive citizens,

I just started a new wave of school and with it a system of tagging-based organization on my mac. Goodbye folders!! Currently I can tag a file with a predetermined term using hotkeys in Quicksilver (ctrl-opt-cmd-s tags it "school") but what I want is to quickly enter a tag myself. It takes 5 keystrokes in quicksilver (cmd-esc to grab a selected file, tab, t for "add tag...", tab, and THEN the tag itself).

Any ways of doing this with Quicksilver or any utilities developed for the purpose? If Apple is serious about metadata I should think that tag creation would be easier.

Cheers
Ryan