Yep. I remember that when I saw the initial announcement (don't remember where), I grabbed my account name just incase I ever wanted to try the startup thing, trying to make sure that I could get my name rather than "some31337d00d_27".
It was on the reddit front page when pg made it public a long time ago. Well, 2027 days ago according to my created field. The only way to have an account older than 2027 days (as of today) is if you were in YC before news.yc was public.