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bwnbwn - 1:30 pm on Sep 23, 2008 (gmt 0)
Yahoo and MSN are much harder to get the rewrite correct to keep them from indexing both the dynamic url and the rewritten url and I feel this is one place so many sites are having real problems in Yahoo and or MSN. I feel this is a good waring to those that are getting started and better to leave the url as is rather than try the rewrite and develop problems down the road. Having sites in the index for years with rewritten URL's there is no going back to the dynamic URL's without a tanking in all the SE's
We have always done very well with rewritten url's and can't see ever changing. I am with Robert Charlton on this one I think it is a warning to those that really don't understand the aspects of the possibility that if not done right it can cause duplicate issues.