I guess I would be considered one of those deadbeats.? I have "notifications only" configured for all the groups I belong to, and I do all my reading, replying, and composing replies on the groups.io website.? I basically treat groups.io like an online forum.? Looks like you can't easily track activity of members like me.? You might be able to just search the message archives for my name to find how active I was in the group.
Peteski