I've seen that before twice: in both cases, it meant that it steps on someone's or some group's ego or politics, and then there's no small brigade of internet trolls sent out to deliver Amazon justice.

I've never seen that in fiction, though.

I gave a one-star review to Sarah Lacy's book on Web 2.0. It wasn't politics as much as truly shoddy journalism. She attributed thoughts and opinions to me without actually asking what I thought on the subject (she was basically fed info from digg PR). My negative review probably looked like a PR thing, when in fact it was a personal reaction to plain old shoddy work.