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Bing Universal Advertisers.

Bing Advertisers.

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.

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

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

Dynamic tag management gives marketers intuitive tools to quickly and easily manage an unlimited number of Adobe and third-party tags. You'll have more control and flexibility to optimize virtually anything online, all while reducing the dependence on IT resources.

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

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.

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.