10 = strongly recommended
9 = recommended
8 = narrowly recommended
no score = not recommended
1 = ntr (netorare, usually implying adultery or infidelity)
In general I feel it unnecessary to rate anime/manga I dislike. So I just threw them into the dropped list without giving a score, even if I actually completed them. The only exception is ntr (netorare), which deserves the lowest score to my mind.
Usually I don't watch anime that are airing on a timely basis. Sometimes I wait until a series finishes airing before watching it. I don't bother updating episode progress except for OVA. You can always assume that I have not watched the latest epsisode.
Usually I do read manga that are being published on a timely basis. As I am concurrently reading a lot of manga, generally I don't bother updating chapter progress. However there are exceptions which I cannot read in time. In those cases I would occasionally update chapter progress so that I would not forget where I left off.