I'm in a FB group like this, women have been doing it for quite a while. Completely random group name that gives no hints as to what is discussed there. Admittance is word of mouth only and based on referral by an existing member preferably with some real life contact. Downsides are that it's totally private and off the radar of lots of women who would really benefit from joining will never know it's there. It would be the same with a group specific to the L, the G or B. Young LGB people who are just coming out really need to hear from older people that boundaries are okay and unfortunately super secret groups are counterintuitive to this. It's a real dilemma.