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You have to change the domain name, but you do not want to lose the old domain name in Google's PR, ranking, traffic. The old domain name 301 to jump to the new domain name, the new domain name automatically inherited the weight of the old domain name, you can maximize the preservation of the old domain name PR, ranking, flow.
You do 301 jump, after a period of time, maybe 35 days is a two weeks, you find that no matter your new domain name or the old domain name is not PR, what will you do?
One man experienced this trouble firsthand.
301 old domain name to the new domain name one weeks later, he found not only the new domain name without PR, even the old domain name of the PR also disappeared. He was anxious, hurriedly ran to webmaster forum to help, the forum inside the SEO peers suggest him to relax, slowly waiting for updates. Finally, there is a result. Time and events are as follows:
October 2, the website made 301 jumps.
October 10, the new, old domain name PR into n/a,n/a Google Toolbar in the PR bar show as Gray, even 0 less than, that miserable ah.
October 30, one months or so, PR changed from N/A to 0.
December 29, three months later, the new domain name finally obtained the old domain name PR.
From the beginning to the end, the whole process of transmission PR spent three months. Why so long? Only Google knows. Does PR pass really take so long? (Ouyangqiu suggests that a theory should not be easily asserted without a large number of experimental results.)
Most of the time, the weight of the old domain name will soon be able to pass to the new domain name, but Google Toolbar shows the PR update is relatively slow. Site rankings, traffic should also be faster to restore the level of the old domain name.
So how long does it take for the new domain to get the title of the old domain? Look at the situation.
And a lot of factors related to the original weight of the site, site size, jump times, to do the timing of the jump (personally speculated that the PR update one months or so better), Sitemap and so on.
Article from Ouyangqiu Blog: http://www.ouyangchun.com/