A view on PR hijacking

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PR hijacking, that is, using deception to get the higher PR value display on the tool bar. The method is to use the jump. Previously said, the general search engine in processing 301 and 302 turn, are the target URL as the actual should be included in the URL. Of course there are exceptions, but in most cases this is the case. So if you are from domain A do 301 or 302 jump to the domain name B, and the PR value of domain B is higher, domain A in the PR update, will also show the PR value of domain name B. The simplest is to do 301 or 302 jump to high PR domain name B, such as PR update, immediately cancel the turn, but also obtained and B station the same PR value. This fake PR display value to maintain at least until the next PR update, generally has two or three months or more time (recently GG update a bit slow).

A more coy approach is to detect Google Spiders by program, returning 301 or 302 of turns, returning normal content to regular visitors and other spiders. So what we're seeing is a regular site, and only Google will see the shift. For example, the following PHP code can achieve this effect:

if (strstr ($_server[' http_user_agent '), "Googlebot")) {

Header ("http/1.1 moved Permanently");

Header ("location:http://www.todo.net.cn");

Exit;

}

else {

Header (' content-type:text/html; charset=iso-8859-1′);

};

?>

These two methods to get the PR value, are not their own domain name true PR value.

PS: Generally this is the PR value of the person's goal is also very obvious, is to sell links, sell pr. However, the links on this site have no contribution to the PR value.

The following is a more common way to judge PR hijacking

Method One: PR detects website http://checkpagerank.net.

Method Two: Look at Google's snapshot of the Web page, Google snapshots and you see the page is not the same site, (general website title and logo will be displayed), very suspicious, the Web page snapshot that site is the PR hijacked the target site.

The method of the defect: as long as the site hijacked after the end of the update to their own website, Google will be indexed new sites, that this time can not see the original site traces, it can not confirm the PR is hijacked, but also can not know which site hijacked. This method only applies to hijacking a target site after converting to its own site soon.

Method Three: View the reverse link, and then according to the reverse link to determine the real site is which. For example: Xxxxx.com PR is 4, and it.xxxxx.com PR is 6, although this is the authenticity is relatively large, but check found that it's two-level domain name suspected PR hijacking. Login to Google, in the search box input: link:it.xxxxx.com, search results in the site is to provide backlinks to the site, any open a, in the inside to find it.xxxxx.com links, did not find. Another random find a few, still did not find, this means that the station's PR is hijacked (more than a few sites can increase the credibility of the results of this judgement).

Confirmed that the site is a PR hijacking, the following to find the site hijacked which site of the PR, you can do this: see link out of the results of which station more, is generally the site. Because link's results and hijacked PR Web site link is the same, and was hijacked PR site page link to the main domain name more, so the general result of more than that station is hijacked site. We have seen in the results of a large number of content from it.com.cn, so the preliminary judgment of the site is hijacked it.com.cn pr. The method is simple to verify the results of the judgment just now. Compared with link:it.xxxxx.com and link:it.com.cn, if it is the same, it means that the judgment is correct. Enter link:it.xxxxx.com in Google, look at the results of the query, and then enter link:it.com.cn to see the results of the query. Both search results exactly the same, so it can be sure that it.xxxxx.com is hijacked by the it.com.cn PR.

Another noteworthy is that when looking for and buy links, if the other side show off is high PR value, be very careful. Link should be based on the relevance of the main consideration, PR high and low on the actual ranking impact is not as important as many people think.