Google became a domain name registrar a few years ago, but has not provided domain name registration services to users. Therefore, most SEO believe that Google has become a domain name registrar, in order to obtain more large-scale and more convenient domain name registration information, and help to improve the quality of search. This point, Google people have also explicitly admitted.
One of the biggest SEO problems associated with domain names is how effective is the link from the previous domain name when buying a domain name? Does the link weight remain
Google once mentioned that many people buy domain names because of the domain name accumulation. In this case, once the domain name is changed, the original link and its weight will be cleared and no longer valid.
but there are many situations where domain name buying and selling are not necessarily for links, such as mergers and acquisitions between companies, and so on. It is inconceivable that Google bought Youtube, Youtube domain name transferred to Google name, but all the links on Youtube were cleared. In practice, that didn’t happen either.
Google then how to determine the domain name transfer link, or for other reasons? What circumstances and link weight will keep? Danny Sullivan a few days ago wrote a summary of several posts, and Matt and Cutts communicate this problem.
Matt Cutts says, "
some domain name changes, such as mergers and acquisitions, the previous link will be maintained. Sometimes it doesn’t make sense to keep links and weights, such as expired or expired domain names. Google and all other search engines try to correctly handle the link problem when the domain name is changed.
our system is mainly testing expired domain name transactions, or only for link domain name transactions.
Danny Sullivan lists several scenarios based on the answers to Matt Cutts and their own observations:
buy expired domain name
this situation is basically certain that the original domain name link and weight will not be retained. In many forums have seen webmasters in the discussion of the so-called domain name dropped, many people keen on expired domain name trading. In fact, if it is for these expired domain name, previous links or PR, and so on, there is no point.
buys the domain name and then turns to
some people find a good domain name to buy, and then do 301 turn to their main site, I hope this domain name accumulation of links can go to their main site. In this case, I’m afraid the original link weight on the domain name can not be retained. Because of the turn, Google can judge the domain name to change the link weight.
, keep the domain name