1. A computerized aggregation system, the system including: a master server system programmed to receive data from a user computer, to store the received data, and to process the received data to produce information including credentials, and to provide the information to a client-side application piece at the user computer system, the user computer system adapted to receive said provided information and to communicate said credentials received from the master server system respectively to each of a plurality of third party server systems to facilitate obtaining information from the third party server systems, whereby the user computer system is enabled to aggregate at least some information from the third party server systems on an aggregation template.