One of the big challenges on YouTube is to get watch time...and subscribers! I have tried to mention new channels every time I post to YouTube, and it seems to be helping others. But watch time is another challenge. I know I'm getting close to the 1,000 mark, and that's exciting, but I'm still waaay below the minimum watch hours to get my vids pushed to the next level.
Perhaps we can help each other out by rewatching videos, or watching earlier videos that we haven't watched yet.
I suggest that if you have a channel and want help with this, post your link in the comments, and let people know if you are trying to get more subscribers, watch time, or both.