About Prefems
Prefems is a free tier list maker where the tier list is the start of the conversation instead of the end of it.
You make a ranked list (a prefem) of anything you like. Other people then submit their own ranking of that same list (a hopinion), so instead of one person's opinion sitting alone you get a distribution: where most people put each item, where opinion splits, and which items are genuinely controversial.
Every item you rank is a subject, and a subject keeps its score across every list it has ever appeared in. That aggregate is the Opinion Explorer: a single community rating per subject, with vote counts, written pros and cons, and a controversy score.
What it costs
Nothing. Browsing needs no account, and making and sharing tier lists is free.