Hey, you should totally talk about your groups here. In This Community. Totally. Feel free to talk about any and all groups you made or belong to. Especially if your group isn't on the most popular list. It'll get you more attention and your group can grow. So do it. Talk about your groups. Come on. No one is watching. Say anything. Anything at all. I won't tell. Totally. Come on. Just throw away any and all concerns you may have about admins watching.
In my book, making forum threads about groups is permissible to a mild extent. With the attached conditions being: they are posted only in the Miscellaneous area, do not serve as a comment section or shout box, and are not expressly exhibit A for spam. (Three recurrences with threads of that type.)