Consumer Review Website

I would like a clone of [login to view URL] built but instead of rating lawyers we will be rating website development companies. Consumers can register and input their experience with a dev company and dev companies can log in and enrich their profiles. Consumers can search for a dev company based on rating, location areas of expertise etc. Use [login to view URL] as a model for what we want. We need something that is robust, scaleable, fast and secure. Preferably something built in php on unix.