I hate parenting groups on FB.
My experiences are not good ones. I left my two birthing groups and never looked back!
The first one I left after a few years. I wasn't comfortable in a group that had evolved so much into 'cliques' and though they tried not to allow their prejudices to show, they did and with it their judgemental attitudes. I left after a very minor disagreement but it was the nail in the coffin for me. I wasn't happy and hadn't been for about a year and it was very obvious to me that I was never held in the same regard as others.
The second one didn't last long. I left at the same time. Very much the same reasons but a massive disagreement had blown a hole in the group, some members left etc. But there was always a cloud hanging over it and it was a few months later when one mum decided to stick her oar into a problem that didn't concern her (in the vain hope to be seen as a peacemaker and become more popular). Everything was fine until she brought up an ugly topic of conversation that had been dealt with, sealed and buried into the vaults of the FB group. Again, I had had enough. It was clear that FB groups were not a good idea!
BUT ... I am still part of one FB group. More members than the other 2 (double the second group) but less traffic. Heavily a US following with some UK and Australian mums but the atmosphere is a world away from the other two. I don't post on it very much but reply to questions and if I have advice, i generally give what has worked for me.
I have been judged about the type of carrier I use (not a fan of attached parenting but used one for my own sanity if nothing else!), putting my child in cruisers, using teething gel instead of amber necklaces, putting my child in his/her own room at 2 weeks old, not co-sleeping during poor nights (I am a terribly light sleeper and have genuine fears about it as well as my DH not being comfortable - hell, why am I giving reasons???), beginning to wean first born at 20 weeks, not doing baby-led with first born, having toys, believe it or not, as was told having a room strewn with toys was bad 'intellectually' for them, putting my child down to bed, my choice in settling them to bed on an evening, NOT rear-facing - the list is endless.
This is the reason why in my FB group I am still part of, I choose not to post threads but will comment instead. Though I have more trust in my 3rd group than I ever did in my first 2, I am still wary.
Mothers can be the biggest bunch of judgemental twats ever!