1, in fact, www.admin5.com is also a level two domain name, the top-level domain name is not with www
2, if you put www.admin5.com and admin5.com at the same time point to a website, then in SE (search engine) eyes, they are 2 different with the site, to a certain extent, se will be silly to follow their "domain name complex."
3, about the two domain name and level Two directory confusion, many people do not understand their differences, in the eyes of some web designers, they are the same, stating that the form does not matter, but in SE eyes, is a very specific division of labor, two-level domain name can be a brand new site, Its content can not comply with or subordinate to the top-level domain name, and the level two directory is it on the first level of domain name (or directory) of the supplement and content integration, so for example you want to create a news and community site, you can set the BBS as a level two domain name, so as not to let the silly se faint head.
4, Domain name level: top-level domain name > level two domain name > two level directory > two level directory inside page
5, Domain name time: the creation time and the registration time length.
6, the general SEO think. gov and other non-commercial domain names in the SE weight is higher, this argument is more credible, it seems that "believe that the state, believe that the party" policy in the World pass!
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