Michael
I Love YTtalk
My favourite has to be subscriptions being on the left of your channel, if others are subscribed to you, they will see you being active on YouTube whenever theyre on their channel or signed in, I think we will all see more people coming back more often from this. Hopefully it wont go ignored though as a lot of the time the update is a comment by someone on someone elses video but at the least it should remind them of you.