When I post advice, I don't personally care what they do with it, but that is just me. I have given advice, and had it attacked and had to defend my point of view, but whether or not they listen to me I don't really care, being a mom got me used to that.
I do what I can to help, the rest is up to them. If they disreguard it or listen, either way I feel I have put my two cents in. I am kinda a know-it-all, tho (or so I am told) so I guess I just like to hear myself lecture.
However, I DO find it annoying when people put something on the net and not expect some picky pants to critize, I mean do they KNOW that posting stuff on the net is kinda like setting up a billboard with the info? Of COURSE people are going to post what they think, that's what you signed up for by putting it on the net! If you don't wanna be judged, don't put it on the net, because if you do I GUARENTEE you SOMEBODY is going to critize you. If you can't handle it, don't ask for it.
But even then, annoying as it is, I don't get mad about it, that is their problem not mine. I learned a long time ago I can only control my own behavior, I can't control another's, so I don't sweat it. I don't get mad on forums anyhow. Disgusted, but not mad. I can't be held responsible for them being stupid.