For the time being, I've made both netastrocatalog and the 'announce' list "subscriber only": in other words, only subscribers (i.e., our fellow astronomers) can post messages to either list. If anyone outside the list has a VALID reason for posting, I have figured out how to approve these posts remotely. Hope this will help keep folks' mailboxes SPAM-free... :) Clear skies for the weekend everybody! Lew