In this post I mentioned the idea of a rating poll, which would give LJ user the possibility to click ticky boxes instead of leaving a comment.

Basically, I'd put a poll at the bottom of my fic entry with four or five rating options - from 'Hated the fic!' to 'Loved it more than I love my mom!' or something - so all readers would have to do to leave feedback is click one of the radio buttons. Of course, if people have got something more to say, they can still leave comments.

[Poll #1143506]

ETA: I used radio buttons because thinking about the statistics of the multiple-answers-are-possible poll version makes my head hurt. If you can't really decide which answers to choose, leave me a comment telling me what you think! :)