marin - 9:13 am on Apr 4, 2005 (gmt 0)

For instance, search engine 125 may monitor whether physically correct address information exists over a period of time, whether contact information for the domain changes relatively often, whether there is a relatively high number of changes between different name servers and hosting companies, etc

Four months ago we changed our company's name; two weeks ago our hosting company was bought by a big player, so our DNS will change soon.
Should our website be punished for these reasons?

0088] According to an implementation consistent with the principles of the invention, information relating to traffic associated with a document over time may be used to generate (or alter) a score associated with the document. For example, search engine 125 may monitor the time-varying characteristics of traffic to, or other "use" of, a document by one or more users. A large reduction in traffic may indicate that a document may be stale (e.g., no longer be updated or may be superseded by another document).

Could this explain the recent achievment of URCHIN?