Are you a founder?
lux: I started Simian Systems (simian.ca) when I was 20. Still going, so I guess it's not a startup any more...Also co-founded Dojo Learning (dojolearning.com) which is still a work in progress.I'm considering a switch to a "technomad" lifestyle and becoming a full-time touring musician, which I guess will be my next business venture. I don't think that quite qualifies as a "startup" though :)