Robert_Charlton - 5:45 am on Sep 23, 2008 (gmt 0)

If you are not able to figure out which parameters to remove, we'd advise you to serve us all the parameters in your dynamic URL and our system will figure out which ones do not matter.

I'm looking at that Google blog article, and I think it's aimed at people who don't know anything. I'm wondering why they think anyone who knew what he was doing would take the trouble to use rewrites to create user-friendly urls and serve them up with session IDs.