PingFu uses no extra bandwidth except the bandwidth used for the login, retrieval of statistics from the server, update of banner, and upgrade of application list or the PingFu applications themselves if necessary. Most of the time, these amount to a few hundred bytes of data transferred once in 5-10 minutes, the exception being a rare update of banner or upgrade of the PingFu application, that may result in a download of a few hundred kilobytes.