A nice but of info for selling products as na affiliate on ClickBank

To share a ClickBank product you like with your friends, just click the Like button at the bottom right of any Marketplace listing. ClickBank will automatically generate a HopLink to the product and post it to your Facebook profile. If any of your friends make a purchase after clicking your link, you earn the affiliate commission!

Important: To earn affiliate commissions, you must be logged in to your ClickBank account before clicking the Like button. ClickBank cannot retroactively credit any sales resulting from links created when not logged in to your ClickBank account.