In what way? Writing something the meets our qualifications for "what is a review" is much harder to game than Link spamming. You can game the system only by writing content that is useful to the user.
The only easy to game part is that we give brands a pretty big bonus for themselves. Sony.com/playstation will always be the top hit for Sony PlayStation. Even if we should favor a .gov result that says they are recalled for bursting in to flames. But as that rarely becomes an issue we are ok with that being number 2.
There seems to be a strong emphasis in search results on domain name match, similar to Google several years back. e.g., search "dog training" and examine the results - there's a much higher mix of spammier content mixed in with helpful content than you'll see in the other big name search engines' results.
Anyway, keep cracking at it; I'm sure you'll get it sharper as you go.