SEO notes of the Black dream of the third

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V. The relationship between domain name and search engine optimization

1. Besides, edu and. org domain names may be listed as trusted domain names, some other factors related to domain names may also affect search engine rankings.

2, for example, the longer the domain name validity period, search engine may give the domain name the higher the Trust degree.

3. For example, many people want to overcome the sandbox effect by buying old domain names. But it is likely that if the domain name, address, and email change when the field is nearing expiration, Google will realize that the domain name has changed hands. Then the trust of the previous domain name, external links, PR and so on will return to zero.

4, again for example, many people because want to protect privacy, and use some domain name registrar to provide anonymous registration services, that is, the name of the real name of the owner is not found. While this protects privacy, it can also be risky. Google may reduce the degree of trust in such domains, especially when multiple domain names have similar doubts.

5, for example, many of the same industry domain names are used by the same domain name registrar, the server is the same or from the same virtual host company, these domain names are also a large number of mutual links and so on. The combination of these phenomena is enough to make the search engine's rankings of these sites adjusted.

Six, the site placed Google AdSense advertising code will not affect Baidu's site, the same will not affect the rankings of Baidu, the site on the Google keyword ranking does not directly benefit, but will promote Google's site included.

Google site map sitemap and search engine optimization

Google crawls sitemap content every day.

First, as mentioned above, of course, the most important thing is to make your Web pages more and more good. Because my site does not include problems, so I did not submit site map. But according to friends, this function is really good. If your site has a lot of pages are not included, you should try.
Second, in the Google Site map management interface, you can see whether Google punishes your site. As mentioned previously, Google will notify a portion of the site owners who are being punished. I feel this is one of the most important reasons why you have to use Google Sitemaps. Although this feature is best never used.

Third, Google site map Management interface Diagnostic (diagnostics) section, your site is being crawled, if there are any problems will be listed. For example, url error, 404 error, Server downtime, and so on. In the HTTP error, you can see which URLs are problematic, so that you can solve the technical problems on the site in time.

The diagnostic section also provides a robots.txt file Detection tool. Many times we don't want search engines to crawl certain directories or certain files, and using robots.txt files is a standard method. But if this file is written with a problem, it may cause the search engine to crawl your site completely. You can use this Google Sitemaps detection tool to test whether a directory or a file is excluded from the search engine.
In the Google site map statistic (statistics) section, there are a lot of very useful information.

For example, search statistics (query stats). Google lists what keywords users use when they find your site. In this keyword, you rank number (top search queries). In this keyword, you get the number of clicks (Top search query clicks). Although you can get the same information from the server log file, Google has very clearly listed the information in his interface, which is very useful.

You can get a clear picture of how your target keywords are performing and how your title tags are written from the keyword stats.

I think one of the most important statistics is this, and in the page Analysis section, Google lists what keywords Google considers your site to be most relevant (in your site ' s content). Also listed in Google's database, your backlinks are using which keywords to do the linked text (in external link to your site).

The quality of the reverse link (import link)

In my opinion, there are only three types of high-quality links:

1) from the classification directory. Yahoo and Open Directory, for example. Fortunately, all of Asia's Yahoo catalog is not charged. In other places, they want to log in to the Yahoo directory, they charge a 299-dollar annual fee. And just look at your site, do not guarantee to log on to your site. It's hard to get a free landing for Yahoo now, but it's worth it because of the difficulty.

The other is open directory, free, but very difficult to log in, because editors are volunteers, and it is likely that you are the same industry, is a direct competitor. Editors may intentionally or unintentionally repel many websites. And even if they don't, their editorial requirements are pretty high.

Of course there are other categories. Importantly, these high-quality categories should be edited to review the site, rather than the kind of automatic submission, automatic approval of the so-called classification directory.

2 The second type of high-quality links is a news class site. For example, on other news websites on your company's introduction, or press releases. There are actually a lot of online editions of newspapers and magazines on the Internet, and when posting articles and news, they often link to the websites of the companies they are talking about. The links to these large news-type websites are usually of high quality. It should also be noted that such links are also edited.

3 The third type of high-quality links from the authoritative site of the business links. Every industry has authoritative sites, links from these sites may be free, and may be paid for. For example, the local government's website, the industry Association's website, the club's website. These authoritative sites may be linked to its members, its local businesses, and so on.