Take the 2-minute tour ×
Webmasters Stack Exchange is a question and answer site for pro webmasters. It's 100% free, no registration required.

As I know, maps.google.com or mail.google.com all comes under the same domain and its all are subdomain. Entire web treats these subdomain as the part of main domain and they have same Alexa rank, PageRank and all.

But in another hand, take a look on blogspot.com/wordpress.com/webs.com; these are different sites but blogs or websites under those domains are treated as different sites. Its new URL, all have different PageRank and Alexa rank as well.

Tts about millions of subdomains under those few domain, have almost similar IP address, hosting and CMS, still why they are called different domains?

share|improve this question
add comment

3 Answers

Thank you all for your answers. After few more research about SEO, I came up with fact that, PageRank is not same for a site, but its depend upon the particular one page. either have example of Facebook.

Facebook home page will have PR9 and other pages on FB will have different PR. Thank you to tutorial I found online, unable to mention name here, but I can show you screenshot of PR for different pages of FB having different PR.

enter image description here

and PR for one of the Facebook page is 2. enter image description here

share|improve this answer
2  
Of course PageRank is per page and not per site. –  Zistoloen Dec 2 '13 at 17:11
add comment

All subdomains of google.com are treated separately by Google like for WordPress, Blogspot subdomains. Moreover, Alexa rank is different for Google Maps and Gmail. These two websites are a PageRank of 9 because there are famous websites but it doesn't mean they are treated as the part of main domain.

Search engines are obliged to treat subdomains as a different domains because a subdomain can't use popularity of main domain for just a new little blog on cooking (for example).

share|improve this answer
    
I completely agree that but, this is not only for blogspot or wordpress, there are bunch of other sites too, isn't it so partial for specific site's sub domain will be treated as different domains in all aspact? –  Thedijje Jun 5 '13 at 7:54
    
Google has no choice and must treat ALL subdomains as different domains (whatever the platform). –  Zistoloen Jun 5 '13 at 8:16
add comment

Google has to have implemented algorithms that try to guess whether all the subdomains of a site are controlled by the same entity. For most websites, there are going to be few subdomains, and the subdomains will all be run by the same person or organization. There will be a relatively small number of sites like wordpress.com that allow users to each control a subdomain.

Once search engines identify domains that allow users to edit an entire subdomain, they will treat them differently in their algorithms.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.