Yeah, I'm both a moderator and supporter. :D
Well, I first became a PC Supporter when I donated some money to the community. When you do this, you're rewarded with extra privileges that can be summed up here [Supporter Benefits]. Couple years later, I was asked (though not really given much choice :P) if I would like to look after the New Users / Welcome board here due to my activity and helpfulness there, and thus I became that board's moderator. :] Soo... like many other moderators, I hold both statuses.