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SuperSilentSin Nearly no halfway decent novel has below 4 stars. 4 stars should be the bottom line. Also, most original authors fake their own rating with fake accounts. Thus only lvl 3 and above accounts should be allowed to vote. They could also implement a time restriction allowing only accounts older than 2 weeks to vote. the should only allow one account per IP adress or at max 2 if someone shared their W-Lan. They should block proxy IPs if possible.
The reason a lot of novels aren't that appreciated is simply because they lack quality. The good novels get a lot of good feedback. Most people simply don't read Sayiajin Naruto Pirate King with a System.
The only way to guarantee that original authors grow, get good feedback and earn some money is to ensure the quality of the novels. If great original novels are drowned with hundreds of fanfictions and simply bad novels with 5 star fake ratings of course, most readers won't bother to plow through all of them. after reading the fifth fake-rating novel written by someone who can't even write a coherent sentence most won't keep bothering and simply drop original novels in general, thus never get to read the good ones under them.
Malicious fake voting and quantity over quality is the main problem for the original novels.