Coming to think of it, there would be a way to back up Yojimbo with
Time Machine: you just need to create a sparse bundle disk image
with Disk Utility, put your Yj DB on that and make the Yojimbo folder
in ~/Library/Application Support/ an alias to the mountpoint of the
image in /Volumes.
By the way, as I could not find a single example of an Apple Script
for tagging selected items in the archive on a quick dirty search,
so here is my variant for the records:
pre
-- tag all selected items in Yojimbo
-- Presents the user with the list of current tags in
-- Yojimbo; if none is