Excerpts and fair use for review

[muddy_shoes]

My understanding is that using excerpt from a novel or short story in a review comes under fair use, providing that the excerpts are reasonable in size and content.

I'm wondering whether this would extend to providing excerpts for other people to review. I'm thinking of a "blind taste test" sort of affair where people can perhaps read the first page and give an opinion. Attribution would be given, along with links to purchase information, either on demand or after the excerpt has been rated.

Personally, I wouldn't mind this sort of thing, but I'm wondering if I'm just more liberal than others. Would it be an issue in law or be seen as inappropriate by many people in publishing? What if they are excerpts that are already available in existing samples? I know this doesn't change the copyright issues, but does it affect the view of potential damaging use?