My first experience with family tribes was the first world I ever played: W4.net. There was a tribe there called LIFE, which stood for Liberating Infantry For Life. LIFE committed two unforgivable sins. The first was that they didn't know how acronyms work. The second was that they would recruit entire tribes to be their family members, as opposed to recruiting individuals and then filling overflows into separate tribes. No, they'd approach an established tribe and say recruit the whole thing and slap a new LIFE number on it. They eventually won the world, but that's because they had LIFE through LIFE 8. I have never gotten over my hatred for family tribes since then.