Elise_Elleneth The only problem in implementing a program for this would be that they just need to get some real words or sentences that don't have anything to do with the LN and spam that instead. I agree though. I really dislike those reviews. It use to be a LOT better on QI/WN and didn't have reviews like that. For about the first 2 years of the site most reviews actually had something to say. There were still some who would only say " Great Novel Great Novel". It wasn't as bad as it is now though.
These types of reviews really do make it hard to find legitimate reviews to read and see if you want to read the LN. They also flood out people how leave reviews about what they have read and wondering about if such and such thing changes later on in the story.