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 have NEVER in my life seen a channel with 10k+ subs use auto gens except Etho, but he didn't need thumbnails since he started youtube WAAAAY back