Let me try to put some "good spin" on it --
Only 50% of the publishers in the Cong were at that CLAM meeting. Half of them won't know who was being "marked" or were not even listening to what was said (snooze). Those that really know you, might have their curiosity stirred about why you are so "dangerous". What do you know that they are missing out on? If you bump into them somewhere, they will likely snoop a little. Be careful to only "plant seeds" and say anything that can be used to "hang you".
I don't know that we have been officially marked by a talk, but there has been plenty of malicious gossip and we find that when we meet JWs we know (at WalMart or a restaurant, etc), the ones we knew well still chat and "catch up" about their kids and what is going on in life. They seldom ask "what Cong are you attending", because the majority know we are "weak or inactive" and not attending any Cong. The ones that barely speak (or even those that semi-shun us) are the ones that never mattered anyway.