Sign and reply to make this pledge for the sake of the writers. If we are busy at work, we will at least "like" it or remember it and comment later. If we are putting in the time to read at work, we can spare some time.
So this is my commitment to the writers. If I read your work, I will comment - not just like. Even if it is an SS, commenting once is not enough if the story is doing a good job of keeping the reader hooked.
Mary.