I think my feedback is similar or identical -
It doesn't support removable volumes!

I was so happy to find and test this product - I even wrote a review of it:
http://blog.openhatch.net/2010/01/file-tracking-with-tags-tag2find-for-windows/ (http://blog.openhatch.net/2010/01/file-tracking-with-tags-tag2find-for-windows/)
I hope this problem can be solved!
I keep all my files on an encrypted, virtual volume (using TrueCrypt). If this can be made to work with TrueCrypt, we've got a winner. As it is, we have a winner - I'm probably an unusual user. But it is a royal bummer I thought I could use this with my file systems setup, and apparently I can't.