Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Fly is a platform for running full stack apps and databases.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.
A modest JavaScript framework for the HTML you already have.