Using moving tags (Was: Preventing "dirty" checkins)

[Yamuna Ramasubramaniyan]

I have a question about using moving tags.  You tag
the repository with LAST_GOOD today.  Someone removes
a file.  This file still contains the LAST_GOOD tag. 
The next person checking out the module with the
LAST_GOOD tag will get this deleted file.  Do you use
a commitinfo trigger to remove the moving tag from the
deleted file?  Are there any other ways to handle this
case?

-Cheers,
Yamuna