I'm a mod user, not a creator, but I understand and fully agree with some mod authors' concerns. This needs to be opt-in. There is a difference between mod makers and the manufacturers of the products on PC parts picker. The latter are making a product for sale. They are creating products as professionals doing a job, and selling them for money. This makes them an appropriate group for scutiny in a whole different way than modders, who share their work for the love of doing it. They have no such responsibilities. An opt-in might make your site less useful, but then again, not being able to search your home without a warrant makes the police's job more difficult as well. That comparison might be a bit much, but hopefully you see the point. The review and reputation system is completely superfluous. Endorsement and download stats from the Nexus is already a good guide for mod users in that respect. I am also baffled by the idea that someone could still think a crowd-sourced review system is useful at all, that sort of internet optimism should have died with Steam reviews and metacritic. It is ripe for abuse. Also, see above about mod makers' accountability, or lack thereof. Already modders are hiding their mods on the Nexus, and while it negatively affects me, I sympathise with, and understand, their reasons for doing so.