| 摘要 |
A panel arrangement is provided to collect access information relating to access by a plurality of panel members of a plurality of web sites. Each of the panel members accesses a corresponding web page stored at a central facility. The web page contains a URL for each of the web sites and an ID uniquely identifying the corresponding panel member. Each panel member transmits, either to each of the web sites corresponding to the URLs of the web page or to the central facility, the ID of the corresponding panel member and any panel member cookies which are stored by the panel member and which correspond to each of at least some of the URLs. Each of the web sites transmits, to the central facility, web site only that access information which relates to the panel members.
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