Boolean search?

[isotactic]

I don't know if/how to do it, but I would like to be able to exclude a tag from a search. Like, search for

drawing, !archive

or something.

[agma]

I need this feature too, sometimes it's very useful: find files with One tag and without Second tag. For instance, need find 'Microsoft' 'Distributive' and not 'Hotfix'...

P.S. I've find tag2find, try it and I like it.