If you can only have one person playing per account at once, isn't this pretty much pointless? I mean, it's better than not being able to share at all, but if you have ten people with access to an account, the chances of none of the other 9 being logged in when you go to play are probably slim unless you work it so that you only share with people in different timezones or something.
That is fine. If everyone has the same 10 friends, in a giant circle.
So person 1 is playing person 2's shared games
Person 2 is playing person 3's shared games
Person 3 is playing person 4's shared games
Person 4 is playing person 5's shared games
Person 5 is playing person 6's shared games
Person 6 is playing person 7's shared games
Person 7 is playing person 8's shared games
Person 8 is playing person 9's shared games
Person 9 is playing person 10's shared games
Person 10 is playing person 1's shared games.
Everyone gets "free" games other than the ones they purchased, get everyone to rotate each week... profit.