I had made this suggestion myself over a year ago, but to avail as you know. More & more social groups are popping up daily. Since the date/time of the last posting from a member in each group doesn't show up in MY list of groups (the ones I'm a member of), I have to scroll through pages of groups to see if there are new ones in my group.

I don't want to open each group; no point in opening it without new posts, or if I was the last one posting.