| http://www.w3.org/ns/prov#value | - FIELD OF THE INVENTION [0001] The present invention relates to a computer network based instant messaging system and more particularly to a method and system for tracking and specifying the online status of users of the system. [0002] The invention has particular, although not exclusive, utility for users that use client applications such as Global System for Mobile Communications (???GSM???) netw
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