I've tried using both WebmasterWorld's site search (not helpful), then Google (more helpful). All I can find is to go back to the original post, select "edit post" and uncheck the box for email notification of replies.
Alas, it's been so long (several months since my post), that the "owner edit" feature is no longer up.
How do I stop receiving email notification of new posts in any particular thread? Thx.