I participated in Project Record Breaker 2, keeping track of statistical data. Incase you don't know what project record breaker is, it is a cafe topic meant to breaker prior cafe records.

Current Records
The current world record for most posts on a topic is held by the Spanish server at about 494,000 by Café del amor y la amistad.
The current most posts on a topic in a day is held by the English Only Server at 31511 posts by Project Record Breaker 2.
Most likes on a a reply to a topic is held by the Spanish server and player Eldodogamer at 569 likes on Café del amor y la amistad.
The longest lasting topic on an active server is Café del amor y la amistad by the Spanish server at 63 days.

Project Record Breaker
Project Record Breaker accumulated ~88,000 posts in its lifetime.
The most likes a reply post on Project Record Breaker accumulated was 485 by a post from Pbthelegend.
Project Record Breaker was deleted due to inactivity.

Project Record Breaker 2
Project Record Breaker 2 accumulated over 295,113 posts.
Project Record Breaker 2 was getting about 7,500 posts daily before being deleted.
Project Record Breaker 2's post to minute distribution is about 7.165 posts for every minute.
Project Record Breaker 2 was deleted by moderation. It lasted for 28 days and 14 hours.

Project Record Breaker 2 was featured in a Transformice presentation at GameCampFrance.
Tigrounette has posted on both Project Record Breakers.