My results using aged pva accounts ( not sure it matters )
Yesterday video #1:
Sent 150 likes, 140 registered instantly ( same IP, but cleared all traces between logins )
Yesterday video #2:
Same as above just changed the video right after #1 finished = no likes registered at all.
I switched IPs and accounts. Same thing, no likes registered.
Today:
Fresh IP (not proxy), new accounts, picking random new video, 10 likes, zero registered.
It seemed very strange so I tried liking another random new video using my real account on a tablet with 3g connection. Counter increased. Closed/opened youtube app. turns out it didn't.
Other observations:
- Dislikes are getting counted, IPs accounts etc doesn't matter.
- If you login with an account that already has a like on a given video, then you unlike/like it again, the like count decreases by 1. (your original like disappears) Tried 3 times.
- Botted views are counted.
I think it's just a bug since it was working like 12 hours ago. YT may take the negative seo route as well, which is working exceptionally well nowadays. Then we'll just adapt to that.