Scott, yes, ideally a user should be able to comment/rate only once.
I believe the protocol is ratings (minus the comments) are restricted to one per user, and comments (minus ratings) allow for multiple comments. Logically, Ratings+Comments should also be restricted to one per user.
Personally, I'm using this instance of PA as a restaurant listing with user
reviews, so allowing users to submit multiple comments/ratings doesn't
make sense. I can't think of an instance where one would need to allow for multiple ratings/comments per user! |