In one embodiment, statistical information is generated in a computer network by detecting reception of documents in a client computer. A server computer is notified of the reception of the documents to allow the server computer to generate statistical information indicative of the effectiveness of an advertising campaign. The documents may comprise web pages, while the computer network may comprise the Internet.


< Verbal classification system for the efficient sending and receiving of information

> Identification of a longest matching prefix based on a search of intervals corresponding to the prefixes

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