This feature allows you to embed, in product descriptions, links to other pages in your store (such as other products or categories) without losing the session if the customer did not accept the cookie.
For example, you may want to include a link to a related product elsewhere in your store.. Without this contribution, such links would not have the osCid added where required.
It is very easy to install and use - just one new file and two edited lines.
Support at http://forums.oscommerce.com/index.php?showtopic=135060