What is advanced events?
- Why do we have advanced events? Is it good to clear it?
- What is the best way for keeping the NodeBB database clean of tempdata?
For the first point, it's mostly an "audit log" of sorts... if you ever see weird stuff happening and want to see what's going on, check this log.
e.g. Some users are getting banned, and you want to know who's doing it, check the log.