I got the impression the
count of 'Total Posts' isn't counting posts but visits.
This bug can be reproduced with following steps:
1. click 'home'
2. remember the total and the time of the last post
3. visit a posting
4. click 'home' again and the total has increased by 1
even if the last post didn't change.
I think it's misleading to publish more than 20,000 postings when these postings
seem to be visits only.