Hello all,   I'm currently evaluating Lithium as a solution to implement social features, such as friends, activity feeds, leaderboards, etc. on a client's site. I've been digging through documentation, but could still use some guidance. Has anyone here tried something similar and have some advice?   One question in particular I have is around creating and administering groups. I'm thinking about implementing a user's group of friends by creating a new group for each user, then adding their friends to that group. However, there doesn't seem to be a way to add a user to a group programmatically without user action being required. Instead, it looks like you need to use the /invite endpoint, which requires the user to opt in to be added to the group through a message, which is no good for us.   Any constructive input is appreciated.   Thanks, Frank ... View more