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tedster - 7:57 pm on Apr 26, 2007 (gmt 0)
The 2005 History and Age Data [webmasterworld.com] patent uncorked a lot of date-related stuff, link aging etc. So there's probably some juicy new stuff in these.
Most of these criteria are mentioned in other patents - so the fact that these particular factors are involved is not going to be news. But the way in which the factors are being scored probably is.