An apparatus method and system are described for categorizing Uniform Resource Locators (URLs) when accessing the Internet from a client. A request message is generated to request categorization of a specified URL, and a category is provided in a reply message. The specified URL and the category are added to a category cache. In a second or subsequent instance of a URL request referring to the specified URL, the category is determined from the category cache. This reduces communication traffic in a network such as the Internet.

 
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< Associating multi-lingual audio recordings with objects in Internet presentation

> System and method for targeting advertisements to tenants in a building

> Peer-to-peer (P2P) connection despite network address translators (NATs) at both ends

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