Yes we are sharing the reward with the author, but will keep a fee. How much i am not sure exactly. And yes this will be paid out wehn the comment is paid out. We will create a comment once a week if an upvote occurs. We will all link them under the first one so ther may be 1 very long thread of forever comments ubder every popular post.
I hope this becomes a problem, but will deal with it when it does.
As it comes to fees, notice that we are operating at a loss at the moment and are no where near making a profit or getting the money we invested back. We are working on building features for the future of steem and hope to get some of the rewards when prices are going up again.