Google now seeing subdomin as part of the root domain.
by WilliamCAs pointed out by Barry, a friend of mine over at seroundtable.com (http://www.seroundtable.com/archives/007250.html), google seems to now be seeing subdomains of a website as being from the same domain as the root.
Some examples that Barry and SEO Scoop noticed are:
http://www.google.com/search?q=site:www.seroundtable.com
http://www.google.com/search?q=site:www.about.com
http://www.google.com/search?q=site:www.blogspot.com
http://www.google.com/search?q=site:www.craigslist.org
Until I saw Barrys post I had never seen subdomains come up in searches for www.domain.com before using the site: operator.
Maybe the bit in googles webmaster central that allows you to specifiy www.domain.com or domain.com of a website is finally working properly, or possibly this is gathered from the xml sitemaps data.
This may affect those who rely on links from subdomains being seen as seperate entities and holding a little extra weight than normal internal links.
Update (Jan 22: 11.23am)
CrankyDave Said: "ETA… Just checked 2 of links you posted Will (about and craigslist) and neither were showing any subdomains. Perhaps it's the DC I hit."
You are correct. I am not seeing them there any longer either, tho they are still on 4 DC's, so it may just be an engineer playing with some new changes on those DC's. If that is the case, then it could be something we can expect across the board soon if it works out as expected.
Update (Jan 23: 8am) As noted on RustyBricks log, Google says this was a mistake and is being corrected.
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January 22nd, 2007 at 12:23 pm
It appears what ever is happening is in the very early stages. Now, whether or it’s “testing” or Google is reversing it’s position on how they view subdomains is yet to be seen.
I think if we start to see subdomains begin to get placed into the supplemental index we’ll have a fairly good indication that the links from the subdomains themselves would be being treated differently.
If this happens, anyone who’s been relying on their sudomain linking structure will likely have some work to do.
Dave
January 23rd, 2007 at 10:23 pm
SubDomains and Google
There has been more than a little fire to go with the smoke about Google treating sub-domains as part of the aggregate for a site. This was Originally mentioned by Barry at Search Engine Roundtable – Will and good ol Cranky Dave pick it up from there…