Allow only registered users to write reviews and vote, but anonymous users to vote only.
I'd advocate anonymous for everything as an option, with the disclaimer that anonymous carries the burden of dubious credibility. Sure vote stuffers can skew a rating, but the easy way around it is to have two ratings: one for the timid, one for those willing to stand behind their decision. Any large discrepancy would make it obvious there are participants who learned to vote in Chicago (famous for allowing the dead to vote in elections...and as many times as necessary).


2. Add FAQ [...] how to write reviews
I'll volunteer to contribute to it. You can start with the ad hoc qusestions in the post from yesterday.


Should a good / long review get more points than a short, one-word review?
No points for one liners. Negative points for one word reviews. Laziness should be its own reward.


Associate each story to a thread in the forum
Is this a solution in search of a problem? Seems like it would be easy enough to just use the story title when starting a thread.