In would generally rate in the following way: 7 to 10 depending on how I enjoy an episode and how much I thinknit can be expanded on. If I don't like a chapter I just dont rate it. I see no need in discouraging it.
Have been coming to this site for a long time without contributing. Have started contributing recently with the type of stuff I enjoy and also hoping to write something that others will add to. My ideal scenario is where a few authors add to each others work to get a lot of different idea into one type of storyline.
Anyway, just my 2 cents.