I set it so that people can't rate a story without a comment. I know you would get much more votes if no review and/or registration are required. Maybe it's a good idea to allow anonymous readers to vote.

Literotica is no doubt a much more popular site than this one. It may have 20 to 50 times more daily visitors than bdsmlibrary. So it's no surprise you can get a lot response from them. But it is surprising you got only 2 emails from bdsmlibrary readers out of the 1000 total emails. It is indeed disappointing. But it seems people tend to send private emails instead of writing a public review.