There are all kinds of ways to express anger. I don't see much harm in people coming on this site and bad mouthing the peron who had a hand in the demise of their marriage. True it take two to tango and sometimes three to break up a marriage, but if the WAS finds it therapuetic to base the OM/OW on this site anonymously to those around them then I say go for it. If they are plain being mean and voicing directly to the OM/OW or to others in RL who know these people then maybe not so much.
However I will tell you that I'm a middle-aged guy, accepting the fact that I am now in my 50's with hair that seems to want to turns more gray every day. Due to gene's from my parents I'm not tall but I'm not short either - however no one would accuse me of being tall, dark and handsome :-). I stay fit because that's my lifestyle and what I choose to do. I could easily stop working out and running gain weight and have a nice spare tire around my mid-section. Either way - fit or not, I personally don't give a crap what other people say about me and my physique. What's important to me is that I am comfortable in my own skin. If that skin looks funny, bad or unhealthy to others that is their problem and not mine. If I become self conscious about it and start worrying what others are saying about me then it's because I am no longer comfortable in it myself and then it is up to me to change it.