A while back someone asked in here (I think) how long would we leave a member on our Team before removing for lack of contribution to the threads.
At the time, because I was new to the Team Leader's job and still full of the milk of human kindness, I was shocked, and trilled "Ooooh no, I would NEVER remove a member for that".
I've toughened up since then and the milk has gone sour. I will and have removed more than a dozen members.
The yardstick by which they are measured is whether or not they are failing to contribute to the Team room, as well as failing to appear on FT altogether.
I'm giving them six months. After that, they're removed. Another ten have been removed today. They haven't been seen on FT as far back as September last year.
The Team rooms are for fellowship, friendship and fun. They are not free parking zones.