A potential client contacted my company about taking over an osCommerce site and possibly doing some
SEO work on it. The site has been around for a while and has fairly good rankings in the search engines. They currently get 30K+ visitors from organic search a month.
They are not utilizing the oscommerce contribution for
SEO friendly URLs. All their URLs look something like product_info.php?products_id=6560-200.
My fear is that switching on the
SEO friendly URLs will ruin their current established rankings in the search engines.
Has anyone had experience with turning on
SEO friendly URLs with an already established site that does not have them? What precautions should I take? What are the risks?