Considering the few number of people here compared to Rav and we still have issues occasionally it stands to reason they'd have a lot more problems. Knitting Help is much more user friendly when it comes to sharing our love of knitting and camaraderie. It's easier for us mods to nip things in the bud before things spiral out of control.
I have only a few groups compared to many people and they tend to be specific rather than general. Like Chic Knits where the designer is involved and can help you out with her patterns.