I did read your entire post. I was referring to the general idea of an algoritm based on my voting patterns as you detail here:
“My user likes X,Y,Z, after consulting public voting patterns, we can see that most users who like X,Y,Z often also like A,B,C and dislike I,J,K”
This is how Netflix, YouTube and other algorithms find stuff you like.
I have personally never been satisfied with any popular algoritm, Netflix and Youtube are specifically awful at suggestion stuff I like.
How will you personally sort 5 million post per day ?
The same way it's handled right now, a 'hot' or 'active' sort which is objectively based on user activity.
Maybe the sorting algorithms on other websites work for you and that's okay, I was just voicing my opinion.
Much better statistic than total users due to all the spam bots recently created.