This is good. But you have to remember, the feedback itself is only as good as the other writers in the group. This is where the usefulness of critique groups can get iffy. Everyone brings in something he's working on for the group to read, or, perhaps, the writer is expected to read from his work. Then there is discussion about the piece and suggestions for improvements will be made.
All criticism is supposed to be constructive.
Theoretically, this can be a tremendous help to a writer who is struggling with a particular scene, or needs to gauge reader reactions to controversial subject matter, or whatever. Realistically, sometimes these groups are populated exclusively with dabblers or hobby writers, and you may run the risk of having too many cooks spoiling the soup. If you're very lucky, you may find a group with a mix of proven writers as well as newbies. It may be worth a phone call to your local group's contact to ask if you can attend a meeting or two as an observer. If your goal is making writer friends, this may be a better bet than a groups whose main focus is critique.