Great editorial & you make some valid points.
I agree that you ought to control the domain they host their weblog on. This can be either a new, primary domain, or the sub-domain of a primary domain that you already control.
However, not all things are equal. reason to make use of sub-domains is that from a systems point of view, it is simpler to run the weblog & the corporate site on different systems.
Having a weblog on Magento Hosting
v a sub-domain also makes it simpler to move around or rename, ought to that ever become necessary.
Google does an excellent job of associating sub-domains with a primary domain. To the degree that Matt Cutts has said "it's more of a personal choice". But, I'd agree that all
things being equal, sub-directories are likely a tad better from a pure SEO point of view.
&, for the record, HubSpot itself seo tools
s its primary weblog on a sub-domain . This has been useful for us as we have been through a couple of branding/domain changes over the years,
& having it on a sub-domain made the name modify *much* simpler.
Though there's definitely some minor advantages to using sub-directories, for *most* businesses this is an minor consideration. It pales compared to anything you do that might
increase the frequency of jogging a blog, knowing what is working (& what is not) & integrating osCommerce Hosting other tactics that will help with promotion.
Though advanced trainers might give you an advantage of you are a professional athlete -- for most people, it is better to pick whatever is going to cause you to exercise more.

Great work keep it up!