Besides that, in my experience 'reviews' on SB consist of 75% of readers just going "write moar!!!" for twenty pages and doing wild mass guessing about what will happen next, 24% throwing shitfits over inane parts of the story they don't like, swearing they're dropping the fic, but then sticking around in the topic to troll everyone, and 1% actually reading the fic, giving a calculated review, and trying to improve the author's writing skills.
In other words, it's pretty much exactly like every other fanfiction forum out there.