Dan,
Like sometimes you have someone that befriends you and that tries to get you to do things you don't give a shit about,and don't want to give shit about, and you don't have time to spend thinking about thier shit not a high priority, and they keep trying to lead you to water so to speak and you just kinda selectively, stop listening to what they are saying and try to aviod them, that type of P/A seem to work good for me, being the introspective-introvert that I am. I'm not claiming to be "normal"(what ever that is). As to anyone elses estimates or judgements of good/bad uses of the seemingly "inborn strategy" termed "Passive-aggressive" it is all realtive and conditioned heavely by culture, religous backround, governemnt propaganda and the meaning you give to the term as well as many other things.