We now automatically track when groups were last/first seen in your app, just like we do for users. This is great for telling how active a group is in aggregate, or for finding inactive groups.
We now also recommend sending the signed_up_at attribute in your userflow.group() call (see Userflow.js docs). Along with Group Last Seen, Group Signed Up will be shown by default in all the group segments and on the group profile page.
