Paul Madden (if that's his real name): just another sad troll

Why, whenever I occasionally receive a bad “review” (hey- it comes with the territory- every book, cd, etc. has negative/troll reviews), do they write these almost personal, angry, one-line bad grammar ‘things’? Come on now- you can do better than that...or can you? Is the game for some to try to hurt sales by these “reviews”? Funny enough, he gave the book 3 stars I don’t know- I always sense anger with these troll “reviews."