We were sent the following screenshots of comments made just recently by Dawid Piaskowski, the CEO of Booklikes. It appears that he may have a good answer to the troll problem that plagues GR:
Dawid, the problem with your API as well as GR’s API is that invalid data (i.e. fake reviews/ratings) are passing through the API to all the users who use it. They are taking this data on good faith, believing that the ratings and reviews are legit when they’re not. Please see our new Carpet Bombers Series and Goodreads Review Fraud for more information.