flanok - 1:53 pm on Dec 21, 2012 (gmt 0)
A large site I own was hit by Panda last year and like many, split my site into several subdomains to eventualy recover.
Yesterday I lost considerable rankings aprox 6 to 10 places on most of my large number of terms.
However I have noticed some other changes this week.
I have been looking a lot at the pages being indexed in google, to ensure my site is clear of issues. By using the site: command.
My first observation over the last week is when doing a site command the full url (just a shortened one) is no longer shown within the results, the amount of urls this affects within my site has gradualy increased over the week.
But today when again looking at my main url site through the site: command I noticed that it is now showing the subdomain results also.
In the past when I actioned site:www.(mysite) I only got the www.(mysite) results.
But this morning when I action site:www.(mysite) I also get (subdomain).(mysite). The subdomain results without the www.
A few hours later the site:www.(mysite) results were back to normal.
So the question is this.
Is a Panda refresh now rolling out and are they treating subdomains as if the content is part of the main url?
We know they treat links as internal ones from a subdomain, but is it possible that those of us who used subdomains to tackle Panda, are going to be hit soon?