jdMorgan - 12:18 am on Aug 16, 2006 (gmt 0)

I would recommend going with the Standard, and coding to the lowest common denominator to avoid problems. While our esteemed Googlers will undoubtedly provide authoritative answers for how Google does things, and Google's implementations are usually correct, compliant, and robust, extending those attributes to 'most robots' is rather a big stretch.

Jim