The oscommerce shop uses what are known as Session ID's, or SID's for short. These are used to track a visitors movement on the site in lieu of cookies. But if the search engines get a SID attached to a link they post, it can cause serveral problems, at least one of them serious. This package will help prevent that from happening.

Also see the Buy Now buttons contribution since it works in conjunction with this one.

Please note: This contribution is outdated and no longer needed for most oscommerce shops. It is needed for earlier versions though so if in doubt, please contact us so we can determine if you need it or not.