There's a backend daemon that's sole job is to score quality of content. You feed it content, and it will do it's best to give a quality score. That daemon was originally so people can sell articles and buyers can see a quality score without actually seeing the article (would defeat the purpose of people trying to sell articles).
For example the stars here are the quality score that it automatically assigns:
So I had the idea to use that content scoring system I developed and apply it to content you can see (posts) and allow people to use that slider to filter out low-quality posts if they want. So as a new post is added (or edited), it's passed through the content quality scoring system and stored on a per post basis. The rest is just UI trickery based on that score.
I actually asked because I was curious how the scoring criteria for posts worked. If I was some sort of unique filter, or something more customized based on the individual user (visitor). Now it makes sense to me. Thank you.
So let's say that it could not be suitable for "standard" communities but it could be developed according to your needs only in specific cases, e.g. like you did.
PS: I have to confess that I hadn't heard of AfterTheDeadline
Ya… like I said it really was built as a solution to selling articles without actually reading them first. And the scoring of posts was really just an extension of that functionality that was already there.
No plans on building it for XF2 post content again. Not really worth the time/effort imo.