I had that problem at first too, but if you "unfollow" the group, you are still a member, but they don't show up in your feed. You have to go to the actual group to see anything. I've done this with all of my groups (I'm in many, not just craft related) Also, any time I don't want to be bothered by a ton of notifications, I go to the little triangle thingie on the original post and turn off the notifications, then I don't get bothered with those either. That way I see what my friends are posting without having to scroll through hundreds of benign posts I may or may not be interested in at the time, and only get notified on stuff I actually want to be notified about. . It was a FB changer for me and I actually enjoy them much more now.