Interview with a member of Google's Ranking Algorithm (search quality) Team

[mandy]

Mr. Singhal is the master of what Google calls its “ranking algorithm” — the formulas that decide which Web pages best answer each user’s question...

Freshness, which describes how many recently created or changed pages are included in a search result, is at the center of a constant debate in search: Is it better to provide new information or to display pages that have stood the test of time and are more likely to be of higher quality? Until now, Google has preferred pages old enough to attract others to link to them...

But last year, Mr. Singhal started to worry that Google’s balance was off...

full article: http://www.nytimes.com/2007/06/03/busine....html?_r=1&oref=slogin