Page is a not externally linkable
Robert_Charlton - 3:17 am on Aug 31, 2011 (gmt 0)
the following variations...
As I've observed it, the more specificity in a search, the more likely Google is to return more mega sitelinks.
Previously, what I'd observed on a client domain in the form keyword1keyword2.com was something like....
Search terms in brackets....
[keyword1 keyword2] returns 4 mega sitelinks
[keyword1keyword2] returns 6 mega sitelinks
[keyword1keyword2.com] returns 8 mega sitelinks
Just did a test search and I'm seeing results that I haven't seen before, odd enough that I'm thinking it may be a glitch, or a change... or else, more likely, that Google is testing....
[keyword1 keyword2] returns 4 mega sitelinks
[keyword1keyword2] returns 9 mega sitelinks
[keyword1keyword2.com] returns 12 mega sitelinks
[www.keyword1keyword2.com] returns 12 mega sitelinks
My emphasis....
Does this mean Google places less value on the www domain variation? I set my preferred domain in Webmaster Tools to www.
No, what it most likely means is that you haven't done a 301 redirect so that www is your canonical form... and this might be some evidence that proper server canonicalization is more definitive than using Webmaster Tools to indicate preferences.