Website markcahill.org

DoubleClick is a provider of digital marketing technology and services. Companies come to DoubleClick for expertise in ad serving, media, video, search and affiliate marketing to help them make the most of the digital medium.

A freely available eCommerce plugin that enables shop facilities on your WordPress website.

Websites using some form of Captcha technology on them.

Website using the € symbol on their website - meaning it may accept payment in Euros.

Rackspace email hosting services

A family of standard web feed formats used to publish frequently updated information like blog entries, news headlines, audio and video.

A pingback is one of four types of linkback methods for Web authors to request notification when somebody links to one of their documents. This enables authors to keep track of who is linking to, or referring to their articles.

LiteSpeed web server is a light-weight server which conserves resources without sacrificing performance, security, compatibility, or convenience. It is capable of handling multiple concurrent clients with minimal memory consumption and CPU usage.

Google's hosted library for web fonts. Allows websites to choose and use fonts from a free, wide variety of fonts.

A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".

Wesites using favicon rel tag

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

Any offered product or service. For example: a pair of shoes; a concert ticket; the rental of a car; a haircut; or an episode of a TV show streamed online.

An offer to transfer some rights to an item or to provide a service—for example, an offer to sell tickets to an event, to rent the DVD of a movie, to stream a TV show over the internet, to repair a motorcycle, or to loan a book.