Bambi, you make some good points - mumsnet is at least partly a collection of shared experiences, and we use our judgement when we read them. If someone has a genuine medical concern, then they can get experiences on here, and if they get medical advice as well, they need to check it out with someone in real life.
No one can be 100 per cent sure that people are who they say they are - this is the internet after all I am actually an 85-year-old male plumber, and I have just picked up what I know of breastfeeding from reading a few leaflets at my grandaughter's house....or I could be! I am not a professional breastfeeding counsellor (speaking truthfully here!) but a volunteer breastfeeding counsellor with NCT. My judgement is that Tori is speaking the truth when she says she is a nurse.
Of course Tori can give advice based on her experience as a mother, and while I made the point that some of it was given in a way that was highly likely to offend people ('tree hugger', 'crazy', 'clear problem with supply') , I didn't object to that in principle.
It was when she started to back up what she said by bringing her professional background into it that people got even more annoyed, and I don't understand why you don't see that.
Tori then chose to post a fairly detailed CV, as further back up. She used her professional background as a way of giving further credence to her advice, and that is just not on....because what she was saying was very poor, unhelpful and in some cases plain wrong. There are some posts detailing exactly how, too.
Oli was angry, because of her ow distressing experience with professionals, and she admitted that!
But I was not expecially angry, or rude, but if someone puts a professional's hat on when they give advice, they need to expect to be called on it....just as you would call them on it in real life.
Hope that explains it