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johntang - 10:58 pm on Oct 17, 2004 (gmt 0)
The test is finding multiple pages of the same page cached by search engines. If you can find the same page cached using two or more different URLs switch to absolute.
I switched to absolute links because of Yahoo! servers used multiple adddressing schemes. I could find six copies of the same page cached in search engines. With relative URLs different servers can complete the URL differently. Absolute URL forces compatiblity, stablizing your search engine spidering.