This list gets copied whenever the code source for one of the validators and QA tools gets modified, or when a Bug report get sent to bugzilla about these tools.
Subscribing to this list is free, but this is not a discussion forum. If you wish to reply to one message sent here:
For bug reports: follow the bugzilla link at the beginning of the e-mail, and reply on the bugzilla. For code commits, quote the code you want to review/comment upon, and send mail to the relevant discussion list for QA tools development, public-qa-dev.