Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Internet Information Services (IIS) is an extensible web server software created by Microsoft for use with the Windows NT family.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OpenLayers is an open-source JavaScript library for displaying map data in web browser.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
A modest JavaScript framework for the HTML you already have.