I use Josie all over the place as a username. It's my alias. Sometimes I use my mother's maiden name as well.
Josie is my middle name and I've always really liked it.
To be honest, I wouldn't mind if people just started calling me Josie in real life.
Although, it was originally a toss up between Josie and MoJo (My mum used to call me MoJo and sing the lyrics 'Mojo in the mooooorning!' really loud in the car on the way to school. It always makes me smile when I remember.