Brett Tabke posted the news at WebmasterWorld that Claria launched a new search product. The press release describes "RelevancyRank".
RelevancyRank is a revolutionary search capability that ranks Web pages based on consumer surfing behavior. The technology incorporates basic metrics such as click rates, as well as critical post-click metrics of consumer behavior - such as time spent viewing a site, number of pages viewed at a site, number of return visits to a destination Web site, historical interests based on Web-wide surfing habits, and conversion behavior.
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Brett feels that "Microsoft made a major mistake in passing on Claria."