Lack of interest Multiple Thread Select: Spam action

Overnight, we might have 5 threads that posted that are spam. Sometimes they are auto-moderated (I think based on Askimet) and not visible to public, sometimes they are. It would be nice to use the checkboxes at the thread level and have one of the actions be SPAM.

Currently, the moderator has to go into each thread and click Spam at the message level.

Clicking spam at the thread level would mark the OP as spam.