Lots of factors come into whether I join a tribe or not. ^_^
Main ones are:
The line up, most importantly the leadership. The skill of the line up, not just whether they're friendly, and how sexy the pictures they send me are.
If there is any sort of ascii or (for example) £$^$&^*&~~~@@@*(****^^£$"!!""! ALLIES (ALL WELCOME) ^*&^&^****%^£%"£"£!!!!"£$~~~~
WE HAS BIG FAMILY PL0x
What is your basis or judgement on joining a tribe? Will you join any random tribe or wait a few days, or wait till someone sends you a good invite mail?
The game gets boring without a tribe. Mainly I spend a lot of time just looking at other tribes positioning on TWstats or if they look/sound good. I've never been in a truly exceptional tribe unfortunately but looking around the rim there are barely any decent tribes.