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mack - 6:09 am on Jul 4, 2002 (gmt 0)
Links dont always mean popular whereas if a site is getting a million visits a day that means popular. If google notice that a high percentage of visits occur to foo.com then foo.com is popular and deserves to be ranked high in serps Perhaps that are using a combination of PR and (real) popularity to rank sites.
I agree with the above post...