Possible Duplicate:
Discrepancy between user counts on Leagues versus Users page.

According to https://stackoverflow.com/users, SO currently has ~421k users. (I see 9x4 users on a page, with currently 11,710 pages1, which makes 421,560 users.)

According to https://stackexchange.com/leagues/1/, there's currently 619,716 users.

Where does the difference come from?

1 Note that this number is increasing by the minute. That's why I originally only gave a rounded number.

  • 15
    The extra 200K are Jon Skeets running on separate threads. May 12, 2011 at 19:46
  • 6
    Don't you know anything about quantum physics. Everytime you measure the number of SO users, you alter the result. May 12, 2011 at 19:48
  • The leagues are so popular they entice an extra 200k users.
    – Hogan
    May 12, 2011 at 19:50
  • So my follow-up question would be: What's an unregistered user? Since I doubt that I'm the first to ask that, could someone please direct me to a previous question, so I don't create another dupe?
    – sbi
    May 12, 2011 at 19:55
  • Never mind, found it: meta.stackexchange.com/questions/68524/unregistered-user
    – sbi
    May 12, 2011 at 20:00
  • I see you found an answer, but you might also consider this question, and this question, as additional reading for the pros and cons respectively of being an unregistered user.
    – Grace Note StaffMod
    May 12, 2011 at 20:01
  • @Grace: Thanks, those are indeed interesting!
    – sbi
    May 12, 2011 at 20:08


Browse other questions tagged .