If you are a registered user the link includes your referral ID. This Id is passed back from wherever the share goes and will associate purchase activity to your share. It is encouraged members to provide referral incentives but it is not required.
You are not logged in so this share link does not contain a referral id
One Click shares:
#2 When you are logged in the URL contains a code to reference your account. When this share is responsible for generating new users or even the sale of a product or service this is accounted for in your account. These credits can be used to cover services or you can pull them out as revenue. If your deduction from the account reaches a report-able amount you will need to complete a tax form to complete the transaction.
#3 Even if today the company may not be offering a referral, they might tomorrow. Referral awards will show up in your account balance.