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In the implementation of the SEO process, you may encounter a host of slow problem, then you need to consider the host transfer, why? Because the search engine and people like, encounter open slow Web page will also lose patience, simply do not crawl such sites, this is also a certain reason, The slow nature of your site does not meet the user-friendly requirement.
Before you transfer a host, you need to find a new space provider, buy a new host, upload your website data up, stay on the new host running no problem, the domain name point to the new IP address, the domain name modified after the effective time of 0-72 hours, static to the end of the domain name to contact the old host, inform the other side will stop using their space.
Why would you do that? Because if your site is in the process of moving the search engine to crawl content while your site is inaccessible, it will seriously affect your keyword rankings, and even search engines will think your site is no longer there and remove your site from the index. And as the above do, in the process of transferring the host, if the search engine just to crawl the content of the site, or to crawl to the new transfer of the site, or to crawl to the old site, will not be open to the situation and fell right. As I originally transferred www.szyoko.cn, then I do not know what is SEO, the results of the old space can not be used, the new space again out of the problem to install, after a few days to find the problem, the site rankings and traffic has plummeted, we must learn this painful lesson
This article from: Xiaoyao SEO blog (http://www.gzxfa.cn/)