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Index Exchange is a provider of online media solutions. With a network reach of over half the US digital audience. Previously known as Casale Media.

Google Tag Manager makes it easy for marketers to add and update website tags including analytics, remarketing, and more.

A rich hosted Exchange environment for every user without having to manage a server.

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

Open graph type entity tag

Open graph url entity tag

Open graph description entity tag

The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook

Open graph image entity tag

Open graph site name entity tag

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

Typekit is the easiest way to use real fonts on the web. It's a subscription-based service for linking to high-quality Open Type fonts from some of the worlds best type foundries.

Sites using Html 5 SVG Tag

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.

Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.

Sites who has this tag are verfied by google to use WebMaster tools

The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.

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

By adding rel="home" to a hyperlink, a page indicates that the destination of that hyperlink is the homepage of the site in which the current page appears.

Wesites using favicon rel tag

Meta Keywords are a specific type of meta tag that appear in the HTML code of a Web page and help tell search engines what the topic of the page is.

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

The most generic type of schema.org item.

A scheme.org entity that represents an organization such as a school, NGO, corporation, club, etc.

The average rating based on multiple ratings or reviews.

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.

A review of an item - for example, of a restaurant, movie, or store.

The rating of the video.

A scheme.org entity that represents a person (alive, dead, undead, or fictional).

A scheme.org entity that represents entities that have a somewhat fixed, physical extension.