Does Google treat subdomains as a new domain?

[georgec]

Just wondering, if I had:

mysite.com AND

subdomain.mysite.com

Does Google treat the two as two separate domains for all intents and purposes? By this I mean in the way PR is given, passed, or even banned etc.

[jez_kewler]

this results in 2 different PRs being given - as they are actually 2 different PAGEs (remember it's a "PAGE"rank - not domainrank...

regards,jez

[anallawalla]

Does Google treat the two as two separate domains for all intents and purposes?

Yes but depending on what you have in mind. If you have a subdomain redwidgets.domain.com and it focuses on red widgets, while domain.com and www.domain.com are the corporate pages, are you asking if both sites will display in the same serp, e.g. the company name? Appears to be Yes.

Yes, different PR for subdomain.domain.com in my experience. Good examples to check are the multinationals that use the country subdomain, e.g. au.yahoo.com has less toolbar PR than www.yahoo etc.

[georgec]

Thanks. Just to cite a more drastic case, lets say Google decides to ban mysite.com. Is subdomain.mysite.com in turn affected or not? If Google truly treats the two as separate domains, then it should be "no."

[topr8]

>>>lets say Google decides to ban mysite.com. Is subdomain.mysite.com in turn affected or not?

who knows, but bans or penalties can be applied accross entire networks not just single sites.