I agree that sometimes it seems old stories are better because history tends to drown the less interesting ones, a historical sieve shall we say.
I do like the review system and I really love the feedback both from emails and reviews but the way reviews are implemented encourages positive feedback. If I don't like a story I tend to just quit and leave. If there was a quick button to mark it out of ten, a rating rather than a review system I think the marking would be come a lot more relevant. It would also make it more difficult to fudge the system. That said.....
I think it's petty to be too critical about a story on a free site written by people who share your interests. It's like joining a dancing club and criticising the woman next to you for not having rhythm.
There's also been some criticism about people just selfishly implementing their fantasies in their writing. That's where I get my fun, constructing a story, usually combining stuff I've read in other books (Damn that John Norman I found his book too early, it was the first book that showed me other people shared my fetish) and with luck adding some spark of originality from the little scenarios that play in my head when I'm bored. In reality like science fiction BDSM is a genre and it's rare to find something of real originality but that does not stop there being excellent, well implemented formula stories.
What was the question? Oh yeah has quality gone down? Nope just a case of quantity going up.
< / ramble >