I've done a fair amount of searching and can't find a straight answer anywhere.
I've noticed a big difference between platforms that moderate actively and those that don't. The ones that don't tend to become unusable within a few months.
Safety and privacy are also big concerns for me. I don't want to hand over personal info to some sketchy platform and regret it later.
If you've got experience with any platforms or approaches that work, drop them below.