I did a group therapy many many years ago and I didn't find it particularly helpful, but I was really quiet and didn't open up much. It felt like only a few people really got to participate.
The place I go now for counseling and medication wanted me to fill out a questionnaire about a potential women's group therapy and I'm wondering if it will actually happen. If it does I am willing to give it a try, but I don't have very high hopes about it.