Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
eKomi is a German supplier and product review service.
Etracker is a web optimisation solution.
Open Graph is a protocol that is used to integrate any web page into the social graph.
A modest JavaScript framework for the HTML you already have.