How Google identifies and handles spam links and Google penalties

On their own website using SEO search engine optimization methods, such as hidden text, hidden links, keyword accumulation, hidden pages, JS steering, etc., is a more traditional way of cheating, but also more dangerous. Because of the evidence, was caught no good excuses website optimization services, the proof is on their own website.
and rely on the garbage link to improve the ranking, it is a bit unclear the feeling of ambiguity. In the blog or forum mass, even if detected, the search engine in the processing will be more cautious, because it is difficult to determine who did the mass. Although most of the time the webmaster do their own, but given that many people in order to rank can become a hacker, also do not rule out some people in order to set up a competitor, to the competitor group.
So how to identify and deal with the junk link is a headache. Search engine headache, honest do station webmaster also headache.
The first two days Google filed a patent was approved, the title is: in the data linked to each other to detect the link garbage method, is to study how to detect and deal with spam links. The patent discussed a lot of identification link factory mathematical formula, I completely do not understand, understand programming can study. I admit that I did not remember the high number of college students, the line generation and so on.
The patent specifically mentions two types of link factories. One is to do a lot of web sites, the purpose is to connect to a main site, so that the main site rankings improve. This link factory is characterized by links to the main site of these pages, often weights (such as Google PR) are very low. And normal, really important pages usually have at least some of the more important links.
Another link factory is that a bunch of websites cross links to each other. The link factory's characteristics are that this group of sites in the link mode basically form an island, very few and outside the circle site has a normal link relationship.
Where a patent mentions that a linked factory or a linked factory is suspected of being judged, the following measures may be taken:

1, these pages of the link in the calculation of weights, is not considered at all
2, the link weight on the page is reduced
3, the link weight on the page is punished
4, the importance of these pages is reduced
5, the importance of these pages is reduced, and the importance of the links issued is also reduced

The search engine has the corresponding punishment measure to the website cheating, the commonly used means includes the elimination website data and the website down right two kinds. Google has made a clear explanation of the site's cheating behavior, as detailed in the Google Webmaster Guide.
In addition, to build the site in 3 months time of the website, there is no data or the amount of data is a normal phenomenon. The website establishment time 6 months all belong to the search engine to this website to establish the trust the process (the trust period), in this period excludes the cheating behavior, if encounters the search rank to be big, the rank disappears, the website disappears, the data disappears all belong to the normal phenomenon (sandbox effect), usually less then one More than three months will be from the search engine sandbox out of the box. Visit the establishment of the site in the domain name registration time.

Purge Web site data penalties:

External manifestations:
1, Google PageRank toolbar display as gray, indicating no data;
2, through link and Site command query website backlinks and site optimization services, data reduction to 100 or even disappear;
3, in the current search engine hit the Web site domain name (such as: www.cuteseo.cn), the site domain name in search results completely disappeared;
Any of these situations can be used to determine that the site is purged by the current search engine.

Website down right Penalty:

External manifestations:
1, Google PageRank toolbar Data Update after the value drop to 0, shown as white;
2, through link and site command to query the website reverse link and included the situation, a large number of data reduction;
3, in the current search engine hit the Web site domain name (such as: Www.111cn.net), the first search results are not typed domain name;
4, in the current search engine typing Web site unique information (such as company name or original article title), search results can not be found or ranked extremely behind;
5, the entire station any information search rankings result average drop 20-50;
Any of these situations can be judged by the current search engine down the right.

The principle of joint punishment of search engine:

A site links to b site, b site for cheating by the search engine punishment, then a site will be subject to the search engine joint punishment;
A site has no link b site, but B site links a site. b Site for cheating by the search engine punishment, then a site will not be a joint punishment;
Conclusion: The link of the cheating website will not be punished, but the link cheating website may be punished by the joint. So before making a website link, be sure to carry on the detailed inspection to the link object, ensure that the website does not have any cheating and be punished phenomenon.