My boyfriend, mainly. A lot of people in school had it, so when he got it I wanted to have a look and, being the strange person I am, got addicted before I even started playing.
Sadly, I had no money for an account, and so my boyfriend let me use his account for a while.
I think I began to annoy him as I kept changing his skin to random things like a wolf, and once a punk chic which was awkward for him to explain to his mates why he had a mini-skirt and a low-cut top. And so, he bought me an account
(For some reason my parents were NOT happy, as I'd asked them if I could buy it before and they said no. Even though my dad spends hundreds of pounds a year on multiplayer games and internet.... w/e).
And as for the SMP, that's thanks to fade_to_black and ells551, my good Minecraftian and Real Life buddies. I think ells mainly introduced me just so he could pick on me a little bit - he likes to build 3x3x3 boxes around me while I'm afk XD Though he hasn't done it recently.