Hi,
Among all 75000 registered users, 10000 used to be inactive ones
(registered without any post).
Regular users are always creating an account and post at least one question
on the forum, so there is no reason why we should keep 13 years old user
accounts that haven't posted anything on the forum.
Most have been registered with temporary email addresses or other spam
domain names.
I deleted those and now the forum is so much faster.
Vlad