Well I don't find emotionally hurt people amusing either, but what's funny about it is a) how seriously they take it and b) how useless their posts are - they don't ask for help or what to do, just drop their anger into post to feel better (since they probably don't have balls to say to their so/ex-so how angry they are).
And of course you don't have your MBTI on your t-shirt (some people do, actually). But diffrent types carry themselves diffrently. I might find some girl attractive by physical apparence but it's not the same thing if I'm actually attracted - then everyting, the way she walks, sits, talk and so on are just magnetic and if such thing happens to me I'll usually find afterwards she was either ISFP/INFP/ESFP (usually after doing test as my suggestion).
I'm sure you know what I'm talking about though.