Research on Google ranking optimization (1)

1: The text content of the webpage listed in the Google database, that is, the content of the previous webpage captured by Google.
2: The real calculation and update of Google PR is a dynamic and uninterrupted process. We can see that the prvalue in the toolbar is only "visible prvalue", which is updated roughly three months.
3: In order to make the URL more standardized, we should refer to the following URLs:
Http://domainname.com
Http://www.domainname.com/index.html
Http://domainname.com/index.html
All do 301 redirect to this URL: http://www.domainname.com
4: The Sandbox effect shows that it is difficult for a new website to get a good ranking in Google. No matter how you optimize this website, it is difficult to get a good ranking in Google. Google's Sandbox is a bit like a trial for a new website. During the trial period, new websites were almost unable to rank well under the keyword of fierce competition. Generally, the sandbox effect will last for six months. Some websites that are not highly competitive may be shorter in the sandbox. The higher the competition in the industry, the longer the Sandbox effect.
5 :. edu and. gov domain names are naturally trusted because of these characteristics. edu and. gov domain names cannot be transferred under any circumstances, including trading or leasing .. Edu domain names can only be registered by educational institutions, and. gov domain names can only be registered by government agencies. The authors believe that these features make. edu and. gov domain names most likely to be considered trusted top-level domain names.
6: Google's nasty cheating methods (malicious cheating can be quickly detected by Google)
Keywords stacking
Intentionally put a large number of misspelled keywords
Non-logical, generally software-generated text
Bridge page
Try to use spam software to generate a large amount of spam on other websites
Suspicious page redirection
7: when a Google spider crawls, there is an infinite loop. For example, if you follow the calendar link on a webpage, there may always be a "next month" button on this calendar to generate an infinite loop. Because the web application can generate a calendar for the next month without restrictions, Google crawlers will crash.
8: Leaving spam links in message books does not work for Google for a long time. For example, some cheating people establish a large number of websites and link them to each other, which does not work for Google.
9: Additional materials are part of Google's secondary index
10: Causes of supplemental materials
First, there is a URL standardization problem. That is to say, if both the versions with and without www are in the database, one of them may be marked as supplementary materials.
Second: sometimes the deleted webpage, that is, the URL with error 404 should be returned and will be listed as supplementary materials. Or the domain name has expired and is sometimes labeled as supplementary materials.