Thank you all for the nice ideas. I think it's time for me to sum up all the suggestions.

1. Add reviews anonymously.
I think it could be a factor to require registration for reviewing. I can allow both registered and anonymous users to write reviews. There is no way to completely stop an anonymous reader to write reviews repeatedly. To avoid the anonymous reviews to overpower the registered user reviews, the final review score for a story will be, say:
60% from registered user reviews, 40% from anonymous reviews.

OR:
Allow only registered users to write reviews and vote, but anonymous users to vote only.

OR:
I can force (free) registration to read the stories. So everybody will be registered. I don't quite like that because I don't want to give readers an impression that this site is going to a pay-site direction.

2. Add FAQ.
It's a good idea to put some more FAQ entries to explain the anonymity of registration, how to write reviews, and how important it is to writers etc.

3. Point system for review rewarding.
I am thinking that too. For every review, you get 1-5 point. For every, say, 50 points, you get 1 month free access. There is just one thing: what's the criteria for getting points? Is every review count as 1? Should a good / long review get more points than a short, one-word review?

4. Associate each story to a thread in the forum.
So authors and readers would have a place to discuss a perticular story there.


What else did I miss?