Hi,
I am drawing your attention to Moz's Domain basics here: http://moz.com/learn/seo/domain
It reads:
"Since search engines keep different metrics for domains than they do subdomains, it is recommended that webmasters place link-worthy content like blogs in subfolders rather than subdomains. (i.e. www.example.com/blog/ rather than blog.example.com) The notable exceptions to this are language-specific websites. (i.e., en.example.com for the English version of the website)." I am wondering if this is still Moz's current recommendation on the subfolders vs subdomains debate, given that the above (sort of) implies that SE's may not combine ranking factors to the domain as a whole if subdomains are used - which (sort of) contradicts Matt Cutts last video on the matter ( http://www.youtube.com/watch?v=_MswMYk05tk ) which implies that this is not the case and there is so little difference that their recommendation is to use whatever is easiest. It would also seem to me that if you were looking through the eyes of Google, it would be silly to treat them differently if there were no difference at all other than subdomain vs subfolder as one of the main reasons a user would use a sud-domain is a technical on for which it would not make sense for Google to treat differently in terms of its algorithm.
I notice that in terms of Moz, while most of the site uses subfolders, you do have http://devblog.moz.com/ - and I was wondering if this is due to a technical reason or conscious decision, as it would seem to me that the content within this section is indeed linkworthy (as it has external links pointing to it from external sources), therefore it would seem to not be following the initial advice that is posted in Moz's basics on domains. Therefore I am assuming it is due to a technical reason - or that Moz's adive is out of date with current Moz thinking, and is indeed in line with Matt C in that it doesn't matter.
Cheers