tf2 members

I want to welcome again cloud to the team fortress 2 group. I'm thinking that the tf2 group is going to have a max of 10 - 15 members maybe 20. I have seen clans in the past that would have over 60 players and when 2 members would meet in a server. They would ask each other "Who recruited you?" i have seen this like 2x in the past and found it really funny.