1. A method for receiving electronic messages published through a pub/sub service, the pub/sub service in network communication with one or more client systems, the method comprising the steps of: receiving a message at a client application, published from said content provider by way of said pub/sub service wherein said message comprises first identifying information; inspecting said first identifying information according to a predefined criteria; and selectively accepting said message by said client application when said first identifying information meets said predefined criteria.