Seriously, OP?
MN has opened me to many ideas I'd never thought about before, on parenting, on cooking, on dogs and other pets, on feminism, and just general life. It has given me great techniques and some ones which I don't and won't use too, and the same goes for advice everywhere. I don't take my parenting from MN, I get advice and anecdotes and I think and sometimes I use them, not because a stranger told me it was good, but because I think about it carefully, recognise similarities to what I do now and the differences, and think of it realistically could work. I take my parenting from my experience as a child, from MN, from articles sometimes, a lot (often most) of the time from instinct, from my parents, from how my child reacts and if I we a friend or relative doing something like time out effectively, it makes me consider it. My DH does the same.
If you don't analyse and think about every bit of advice, then of course you will be a bad parent, if you follow a ice wholly mildly. Would you smack your children if someone told you to?
Aside from that, MN does make me a bad mum. I spend way too much time on MN!