Accounts that didn't match up some criteria are got deleted. There is no resurrection for those accounts. Only way to get in is to apply user registration like everybody else do.
Purging criteria is;
- 0 post, not logged in for 4 months 324
- 0 post, registered more than 4 months 221
- 2 posts, not logged in for 6 months 159
- 3 posts, registered more than 1 year 234
- 8 posts, not logged in for 1 year 271
- 50 posts, not logged in for 2 years 149
Total 1358 account deleted. 2501 account left.
That means every 35 account out of 100 is deleted.
