by Adelard Gasana
There is a lot of back and forth about the topic of static versus dynamic URLs and it’s implication to search engine optimization. Early on, Google told us to use URL rewrites whenever possible, and now they are saying you don’t have to do any rewrites.
Here is the most recent article concerning rewrites.
http://googlewebmastercentral.blogspot.com/2008/09/dynamic-urls-vs-static-urls.html