The Konami Code is a "cheat code" that appeared in many of Konami's video games going all the way back to 1986. Konami JS allows websites to add their own easter to be triggered by their users by entering the Konami code key press sequence: "up, up, down, down, left, right, left, right, B, A".
Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.
Elastic Load Balancing automatically distributes incoming application traffic across multiple Amazon EC2 instances in the cloud.
Website using the € symbol on their website - meaning it may accept payment in Euros.
Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.
Content Security Policy is best used as defense-in-depth, to reduce the harm caused by content injection attacks.
Chrome for Android, since version 39 supports the "theme-color" meta tag to allow websites control the background color of the tab's UI header.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.