Cookie-Royalties [ referrer ]

You made a sale through a promoting website and now you want to pay the commissions to your Promoter.
How to do this ?
http://www.m-php.com/sc-m/some_page.html  [ Vendor's website ]
Moreover you can retrieve the website that referred to you although you have no convention with it.
By clicking the link above for example you set a cookie that will stay for 1 year on your machine and will answer to the Vendor's most important question when you place eventually an order :

How you got in touch with us ?

... the vendor will know which page or search engine has given results useful for him.