It will always happen.
I can truthfully say on my unborn childrens lives that I have never intigated any form of nastiness EVER in the 5 or so years I have been on AB.
I ignore the constant little digs but then one day I simply respond.
I further find it ironic that more often or not, the first people to respond to threads like yours are in fact the real nasty people you are describing. Some of the "more holier than thou" underclass, tubby scum on here are in AB terms, bullying, condescending and utterly ignorant pieces of filth.
But as said, the best thing to do is ignore them. Sadly, in my case compared to Uncle Raymondos above, people have held grudges against me for many years.
Who has the last laugh ultimately?
Well, you decide.