Real estate agents and brokers (there is a difference between the terms agent and broker, though they are often used interchangeably) serve a critical role in the market, representing either the buyer or the seller in the transaction. Thus, in most transactions there are two agents: one representing the buyer and the other the seller. Some agents specialize in working with buyers while others focus on representing sellers and some do a bit of both. Some agents specialize in particular neighborhoods or buildings while others cover the entire city. Apartment ads in the newspaper or on most websites (though CityRealty works differently, as described in the 'How is CityRealty different from other real estate sites?" section ) are placed by the agent representing the seller. If a buyer contacts them directly, they have a fiduciary responsibility to represent exclusively the interests of the seller. Therefore, unless a waiver is provided, they cannot represent your interests, at least in a transaction involving the advertised apartment. As a result, traditionally it has been difficult for buyers to find an agent who will serve the buyers needs and this is why we have created our service - to help buyers connect with an agent who will work on their behalf.