Sharing answers to top q's we’re seeing about the thumbnail experiment: – Custom thumbs aren't going away – 99.7% still see the creator's custom thumbnail – A lot of creators use auto-generated thumbnails, this test helps improve them for those using them: https://goo.gl/A7oDmr
I think it’d be better to have it noted on the actual site, to make sure everyone knows about it. Surely it can’t be that hard to just place a little notification on the front page?