A computer-implemented method for managing real estate information on a social network, comprising : collecting multiple listing service (MLS) data and storing the MLS data on the database server; permitting real estate customers to use the mobile application to communicate with the web server to access the MLS data to identify the at least one open house or showing from the MLS data; permitting real estate agents to use the mobile application to enter check-in and check-out information regarding real estate customers at an open house or showing; and permitting real estate agents to use the mobile application to notify a seller that a respective one of the open house or showing has been concluded so that the seller may reenter a premises of the location of that open house or showing; wherein computer-implementation of the method and use of the networked mobile wireless telecommunication computing device is essential.