I imagine some new owners aren't aware of some information that might be helpful. I wanted to share a few tidbits that I found helpful.
There is a statistical snapshot of all active Worlds. As far as I know, the page doesn't have a direct link anywhere. You have to know the link.
World Snapshot
If you wonder how someone knows a specific fact about the game engine, it was probably revealed in a Dev Chat. WifS used to do those for HBD. The link is there under Main -> Developer Chat, but to make it easy you can go here
Dev Chat. Good reading and WifS did answer questions that could help to deduce what the game engine is doing or how important ratings might be.
Speaking of the game engine, have you ever wondered what steps it goes through to do what it does? You can find a couple of slide shows on the inputs, engine and outputs. Here are two links that have PowerPoint presentations on the topics.
Inputs and Engine
Outputs
One final piece that is helpful. If you want to search the forums, use your search engine of choice. For example, I know that in the past someone talked about positive plays per season and how they calculated it. If I use google, I would put in the following in the search bar to find the post on the forum.
positive plays per season site:https://www.whatifsports.com/forums/
It leads to several different threads, but I will post this one which summarizes the concept.
Defense
If you have any links or helpful information, please add them.