Hi

I would like to have an option, that user (approved) for signup, can add one comment and rating to signup owner and vice versa.
You know, the same as it is on ebay, when you bought something(win auction), you can add comment and rating to seller, and seller can add comment and rating to buyer.

I would like to use signup for shared transport on our community site www.somvprahe.sk. The car owner will add node - ride offer, with signup option. Number of signups will be number of free places in his/her car.
User can signup to this node(car). After the node(car) owner will approve his/her signup, I need to have an option to allow 1 comment for owner and one for guested user.

I am not very sure, but it could be some relationship between this two persons, or something else, what i can check, and if it is true, then allow 1 comment and rating. Actually, it is not must to have it as a comment, it could be some cck field "special comment".

Please, let me know what you think that will be best option how to do that.
Many thanks
Igor