Reading your follow up, it seems like you are asking a meta question about forums, or perhaps this forum in particular?
A few months ago, sick of the back and forth on this site and ready to take a break, I wrote a piece about forums for my blog. The crux of it is simply this: a forum is a forum. It's the internet equivalent of standing in the town square, shouting out your problem to everyone who can listen, and getting *everyone's* advice. Chances are, you are likely going to get a few tomatoes thrown at you because not everyone is nice. Not everyone is educated and not everyone is having a good day. (I am not saying that everyone who posts unhelpful/nasty advice is mean/stupid/ or having a bad day, by the way....)
Not to mention: There is a whole host of hot-button issues on this site, and some, frankly, I steer away from because my opinion isn't really going to make a difference. People have very strong feelings about these topics, and often their own histories. Our histories weigh in heavily on how we feel and how passionate we are as we write. I know I've been very outspoken when I read posts/replies that advocate abusive disciplinary measures. Thankfully, those can be reported as abusive and removed.
I've myself am at a point that I am just trying to give advice from my experiences, and to support other mothers as best I can. As someone who has worked with kids for a long, long time, this involves a bit of reflection as to what exactly is going to help *this* mother, because no topic has a universally-correct answer.
Add to this that "my best" is often perceived in our society as a mutually exclusive positive... that is to say, we often do think that "what's best for me is best for everyone else", when in fact, there are just other ways of parenting that make each of us itchy. It's hard to look away when other people suggest things that make us feel itchy, and it's hard to understand what about it is actually upsetting to us.
I myself can stand to be more reflective in my parenting, as can we all. Mostly, though, we all just move through life, doing the best we can in our own ways.