validating a SITE rather than a page

With over 80 pages interwoven into my site, i find it
difficult to keep them all validated at once.  Could
there not be an option to validate the SITE, perhaps
using w3.org's WebBot.  This would make it nice for
large site owners.  The report need not list all errors on
a page , simply list the pages as ok  or not.   The user
can than run the validator on individual pages to
correct problems. This is a common approach for 
link checkers and validation could work the same!
john russell in niagara region ve3ll@rac.ca