I wrote my first review of a restaurant, and kept being told that my comments had to be at least 100 characters for my review to be saved.
What a crock! I like trip advisor and would be happy to add my reviews to the businesses we use as a result of trip advisor, but... I am not going to take the additional time to add blather to a review just to meet the 100 character minimum. I like to keep my comments short and to the point, I don't need to be too wordy, and don't want to waste a lot of time writing a review that meets your minimum size requirements.
Reduce the minimum character requirement and I'll do more reviews as I use your businesses.