Well, our method showed less than 1% of posts having a collusion ratio higher than 0.5. I personally think it's very reasonable for such a large community.
I think my perception came from the side of submitting products. For the longest time they were hand picked and you had to 'know someone' to get on the site. Which is fine, it's not a public good, the PH team is free to use it as they wish. Nowadays I see so many 'guides' on how to get on PH and how to maximize potential when you do get on PH.
