Always wondered what some/many authors think.
Because I no longer post stories on SOL, I'm not afraid to answer your question for fear of reader retribution. While I will agree with the others that the 3584 ratings isn't too shabby, that doesn't make your question or point any less valid. For the most part, ratings and reviews are much more difficult to come by than they should be on a site like this, where an authors only reward for their hard work are ratings and reviews.
One of the reasons I no longer post stories here or on other free sites, is because it doesn't make sense to do so. There is no benefit. Not only is there no income stream, but I stopped learning anything new about what readers want. In my early days of writing and posting, that wasn't so much the case. Back when I made a ton of mistakes and was still learning the craft, there were plenty of people to offer criticisms. I admit that it wasn't difficult for them to find things to harp on. I had so much room for improvement that mistakes were easy to find.
The surprising thing is that as I improved, votes and reviews were harder to come by. My average scores increased by a wide margins, but lacking obvious mistakes to point out, feedback stopped coming nearly as often. Because learning how to improve was my main motivation for posting on free sites, and because that feedback quit coming as readily, I quit posting.
If you are a reader on this site or any other free site, your ratings and reviews are the only reward your favorite authors get. The less feedback that you give them, the less reward they get. That doesn't mean that you can't criticize their work. You can. Keep it constructive and most authors appreciate it. Some of us even prefer to hear the negatives, because it is through those that we learn our greatest lessons.
In other words, as an author, it is frustrating when audience participation is lacking. Especially in the free marketplace.