Why does end nnr Site Census V5.1 exist in the portal code?

Over the past few days, I have observed the code of major portal sites and found interesting codes.

<! -- END NNR Site Census V5.1-->

As a result, I started to search for a statistical website that was originally a foreigner.

Nielsen/NetRatings, a global standard for internet audience evaluation and analysis, recently announced the official launch of SiteCensus, a third-party website evaluation service, in the Chinese market. Sina, Sohu, Netease, and Tom.com have been actively promoting the establishment of Internet evaluation services with global standards, and have recently signed contracts with Nielsen Internet evaluation.

SiteCensus is a reporting system based on the near-census method. It creates a new server-side access
The reporting system organically integrates detailed demographic data through random sampling of website visitors. This service provides accurate and in-depth website measurement information for media companies, content publishers, e-commerce companies, and other online entities.

SiteCensus has been in China for several months. In addition to the four major portal websites, some other companies are preparing for this, so that their website influence can be evaluated by third parties as soon as possible.

David Day, senior vice president of Nielsen Internet Research International Department, said: "SiteCensus is an ideal evaluation tool for a market with a large scale, significant regional differences, and rapid growth in China. We are very pleased to have received support from the four most important websites in China, and believe that this will encourage other companies to use this tool to accurately understand the characteristics of netizens and their website usage."

Zhu liangjian, executive director of Nielsen Internet research China, also welcomed the recent signing. "Accurate data is a key factor driving the future development of Chinese websites," said Yan liangjian. The four websites signed recently are the best in the Internet industry. This contract shows that they have all recognized the key role of accurate and timely data on the success of the website ."

According to recent test data, Mr. Yan liangjian suggested that five or six Chinese websites will enter the top 20 in the world when Chinese website data (average independent visitors per month) is officially published next year, it is very likely that some websites will challenge msn, yahoo! And the top three in the world of AOL.

About SiteCensus

SiteCensus is the standard for internet audience research and analysis of global communication. This service covers 70% of the world's Internet browsing and provides comprehensive Internet and digital media research reports and special reports, this helps media companies, content publishers, e-commerce companies, and other online entities precisely understand their performance. See www.nielsen-netratings.com for details

About Nielsen Internet research (Nielsen // NetRatings)

Nielsen Internet research (Nielsen // NetRatings) is a company listed on Nasdaq. It provides Internet evaluation services and sets up global standards for internet audience evaluation and analysis. Nielsen Internet research (Nielsen // NetRatings) uses its technology-oriented products and services, such as internet audience research service Nielsen // NetRatings NetView, webPF, a tool for reaching the scope and frequency of the Internet, LemonAd, an online advertising information and special data, research and analysis tool. In addition, it also provides online advertising information measurement tools AdRelevance in the United States, as well as the lifestyle of @ Plan netizens, humanistic statistics, and brand preferences.