Q:

Where did some 3K questions go?

I saw question #4,000,000 on SO earlier today, and even congratulated its author. But later almost three thousand questions disappeared, so we are back at under 4M questions (3,997,446 as of now). I am curious what has happened to these other questions, or was it simply a counter glitch?

A:

It looks like 3900-ish questions have been deleted since between November 16, 2012 00:00:00 UTC and now.
Most of these were from our automatic deletion script + a couple edge cases to handle rejected migrations.
I'm not sure what else to tell you here beyond "Stack Overflow has a lot of traffic, and a lot of questions are posted and deleted". :)

