Facts about Groups
There are two types of Groups: Those who are “Open” (accept all requests to join) and those are not (your request will be pending until its is approved or not by a Group Manager)
You can join up to 50 Groups and you are limited to only 10 “Pending Approvals” at any single time.
Always join the Open Groups first. Otherwise, if you reach the 10-Pending Approval limit, you will have to wait to join even Open Groups.
Select Groups carefully: Reaching the 50-Group limit will happen faster than you think, since Groups are such a powerful way to network.
Do not stay in Groups that are not well managed: If the Group grows too slowly, does not attract VIPs, does not have interesting content in News, Jobs, and News, leave it!
Don’t be afraid to join, leave, rejoin Groups later: Groups change: check them regularly