re: Popup stoppers
The best pop-up stopper IMO is part of the Google toolbar. You can allow whatever site you want to have pop-ups with 1 simple click on the toolbar.
In answer to your question regarding HZ. The post message is a pop-up and any pop-up stopper will kill it. That being said most pop-up stoppers have workarounds like holding down the shift or control key as you press the link to allow the pop-up. Sometimes it works sometimes not so well.
-Steve G.