I started two tribes. Here's why.
My first one was /t/dadjokes. I love me some puns, and I love me some one-liners, so it was a bit of a win-win for me.
My second tribe was /t/chiptune. I adore the sound of chiptune but don't know too many people who also love it, so I started it for a place to post my personal collection and to meet others who love what I love.