It's quite good fun but at the same time supremely depressing.
I joined the group yesterday after someone on a local FB group directed me there to find some info to justify the (scientifically incorrect) she was posting.
It's British, all women / mums. And the majority of posts are people asking for information that they can share / use to argue their case about different vaccines being dangerous / poisonous etc, so they can persuade their mother / brother etc not to take them, and to justify to others why they won't vaccinate their children.
I'm answering the questions in their posts, but not with a they want / expect to hear.
I feel like Richard Herring must feel on International Women's day when he spends the whole day on Twitter replying to Tweets by men that say "but why don't we have an international men's day?" With "we do! It's November the **"