Facebook has provided the ability for you to integrate your facebook account with your website. We have taken their program and integrated it so that you may add like buttons wherever you'd like, and even add a comments section to pages on your site.
Once the Facebook integration has been enabled on your website, the only thing left to make it function is to create an application using your Facebook account.
Add Facebook "like" buttons to any of the pages on your website. Enable "like" buttons for products on your website. If someone clicks that they like it, a not will appear on their Facebook profile, linking back to your website and notifiying all of thier friends.
Give visitors the abiliity to enter comments about products, or on pages of the website. This is very useful if you would like people to comment on something that then automatically post that comment on their Facebook page.