Friendship Link Deception advanced techniques reveal the second

Exchange links, is to promote the site rankings, improve the weight of the site one of the most basic methods.

Finally changed a PR high, high weight of the site link, thought accounted for the cheap, the result? carelessly, not only did not take advantage of cheap, but also in vain to send a one-way link.

For links to cheat, I have written two articles on deception. See "Let your unexpected link deception means" and "Friendship Link deception advanced practices disclosure," should be most of the link fraud has been disclosed. A webmaster with me today, said that there are links cheat, but whether the normal link check tool or the development of the plug-in version of the Link check tool, can not identify. Let's take a look at the cheating on this site.

Let's look at the links of the site to the naked eye first. Web site is not listed temporarily, you can add me qq, I can explain the site in detail.

Directly open his web page, you can see the following links show normal.

　　

View the source code of the Web page, the location of links, also show normal.

　　

Then I took this site a friendship link, with the Link check tool www.linkhelper.cn check the link, also found that friendship links normal.

　　

Use Link Check plugin version tool http://www.linkhelper.cn/checklink_new.asp Check, also found that friendship link normal. Plug-in version of the Link check tool is the client local IP to simulate Baidu Spider.

　　

But what's the situation? Let's take a look at Baidu snapshots, attention, directly to see Baidu snapshot, or can see the link, we need to see the source code Baidu snapshot. Screenshot below:

　　

Do you see the link place of the code is completely different, and the second screenshot above, all become JavaScript links.

I personally think that the station's cheating should be, the collection of the spider's IP, and then determine the current browsing for the spider's IP, the show JS link, otherwise, it will show the normal link. In this way, ordinary users see through the browser is a normal link, link checking tool access to the past, but also show the normal link. In this way, in the search engine's eyes, his export links are relatively few, others linked to the number of links back more. However, many acts of injustice will die, this practice is in fact belong to the practice of the harmful. Because spiders have a lot of anonymous IP, will be to detect whether the Web page cheating behavior, if the search engine found cheating, the end result is the site is down right. So I hope that we still do not make such a villain's behavior, harmful to the ego.

In order to correctly identify this type of link cheating, webmaster help nets deliberately upgraded the plug-in version, increase Baidu snapshot two times to confirm the function of the link. Is in the Baidu snapshot to see the other side has no link to this site. This feature is for informational purposes only. The reasons are as follows:

1. Baidu snapshot does not show the full Web page content, usually more than 125K, Baidu Snapshot will not show, but does not mean that the link is invalid.

2. Baidu snapshot is not a real-time update, the new link, and will not immediately update to Baidu snapshot.

We then use the link Checker plug-in version to check the link to see. The findings are as follows.

　　

Baidu Snapshot date displayed next to a no link, said in the Baidu snapshot, and did not find links. Usually you can point to "no link", you can see Baidu snapshot content, and then look at the source code, to confirm the link.

Hope that through this post, we can better detect the link deception means, in the link exchange process do not be fooled. Finally, despise a cheat link webmaster.