Hi Huan,
it will be nice to have new comment and rate feature at your event booking product!
With this feature an event participant can comment and rate past event with stars and to give his comment on it. ( something like jcoments).
For this you will need a kind of a past events db where newcomers (future event participants) can get feeling about the event performance.
Would you be so kind and give us yours thoughts about this issue.
rgds
BM
