Ok, so when you purchase an item on ebay, you are linked to the seller by a unique number and are only allowed to leave feedback for that particular seller for that particular auction. Now, for a help wanted site, can this sort of functionality be reproduced? I'm not sure how angie's list works but lets say contractors x, y, & z bid on a job that I post on my help wanted site. I would like to see feedback for those contractors but only from people they've actually dealt with on jobs from my site. I don't want feedback to be easily fluffed up in the contractor's favor.
How would I accomplish such a thing? Is it even possible from a WP standpoint? Any suggestions are greatly appreciated.
I hope I've explained this well enough.