Invisible
Posting Mad!
Like I said, it's just something I heard from others which is why I said I would be wrong haha. Maybe there will be different percentages depending on the length of the video or it will all be one
Yes i hope soI remember hearing 10-20 seconds sometime in 2012. YouTube does not release this information on purpose so botters don't get around the algorithm

I believe in Youtube
They should choose a clever solution 