I need a professional social networking website.

Brief Summary of things needed: - User database to store new user login info - Ability for users to communicate with each other - Members will each have a profile page -Users will be put into group based on info when signing up, those groups will be put into a larger group where all the initial groups and contact the other groups as a whole - Sections of the website open so that ad space can be sold Would love to go into further detail but the above is the general premise of what we are looking for without going into too much detail.