Probably due to banned, deactivated or deleted accounts.
Possibly, but:
* By your method, I'm #752, by mine, #433, a difference of 319.
* By your method, you're #1,418, by mine, # 1,017, a difference of 401.
That's a lot of banned, deactivated, deleted accounts. Only one of those comes to mind, this was Stimpy but didn't he re-register under another username? I suppose it might be a case of the
known, unknowns or the
unknown, unknowns. Oh dear, my head is hurting, time for a cuppa, a Bex, and a lie down.