In one exemplary embodiment, with at least one processor, a computerized real estate platform. With the computerized real estate platform, at least one web page document is provided. The web page document includes real estate content. A request from a user computing device for the web page document is received. The request includes a referring real estate agent identifier. A referring real estate agent is identified based on the referring real estate agent identifier. The user computing device is associated with the referring real estate agent. The web page document is modified into include an information about the referring real estate agent and instructions to display the information in a display of the web page document in a web browser of the user computing device. A time period countdown is initiated. The time countdown period indicates a remaining time before the web page document is no longer modified to include the information about the referring real estate agent.