A new apple tree named \u2018Cauflight\u2019 is described. Initially, data is received from a source buffer. The judgment unit compares a total number of mails currently acquired with a total number of mails acquired last time and judges whether or not a new incoming mail is present and whether or not a different communication device receives a mail from the mail server, based on a result of said comparison. In one preferred embodiment, the audio identifying information is an audio feature signature that is based on audio content. The present invention is particularly suitable for the online purchasing of shoes wherein through obtaining a virtual shoe profile from an individual, a plurality of recommended shoes can be displayed for the user for purchase based upon the individual’s shoe profile. In one embodiment, the requested tasks are telephone calls received by a network based contact center, and the workers are telephone agents associated with the network based contact center.