I'm not sure what prompted this, but I noticed both my userid # (930076) and my First access to site date (Sunday, August 2, 2009, 9:12 PM (10 years 92 days)) - and got curious.
Through a less-than-algorithmic process, I found the most recent new user - # 2826085
In the few minutes it's taken me to get this post together, it's up to
2826098 2826100 2826101.
Almost 3 million users have registered accounts on this site. I know that they are not all active, but still - pretty cool.