We need a buyer-seller matching system:

Buyers & sellers input specs of products/services wanted/offered, and the system matches them. Think of it as a dating service, altho' it isn't. Lots more details which we cannot share here.

We need a prototype demo system to interest investors.

Joomla is our platform. Almond classifieds and adsmanager don't do the job.

IF you were to do Craigslist the 'right' way, how would you do it?