The disclosed system manages information that is received from one or more users over a communication network. A user provides information to the network using a network node, such as a data acquisition device that is a wireless, mobile communication device. The system monitors the user's location within a communication environment and sends an alarm to a user when the user is near a location that satisfies user-specified criteria. The system stores the user-provided information at a central database that is linked to the communication network. When an authorized user revises the information, any other authorized user can access the revised information by accessing the central database through a node of the communication network.