Facebook’s new Open Graph is a tool that you should really think about using if you have an e-commerce application.
Imagine the power of going to a shopping website and seeing which of your friends like that site. Implement this on your checkout page and see what impact it makes.
There is a real opportunity here for brands. 50,o00 websites have already implemented this new feature from Facebook that was only released literally days ago.
Here is a grat article from Mashable on the e-commerce opportunities that exist from this new feature from Facebook – 5 Ways Facebook Will Impact E-commerce.