A close marketplace is provided where the users' institutional affiliation, identity, and/or criminal record are verified in order to become members. Although an unregistered person may browse some of the posted listings, in order to buy, sell, contact, and/or meet another member of the marketplace, a person has to be affiliated with an approved institution, the person's real life identity has to be verified, and/or the person's criminal background has to meet a pre-determined criteria. The marketplace lowers the risk for the strangers who may want to interact with each other through a close circle of professionals. When two members are going to meet through the marketplace to buy and sell items, to rent, to be roommates, to date, etc., they have an assurance that each member has gone through a validation and verification process.