Interesting article. We have recently had a lot of success in driving traffic to our website via blog posts. I was particularly interested in what you said about using a company blog as a content hub. I feel you could expand this further and create several content hubs within one blog, each encompassing a broad topic area. Examples for a digital marketing agency might be SEO, PPC, Social for instance. There is evidence to suggest that use of content hubs within a blog (rather than the entire blog being a hub) and use of keyword rich internal linking, can be very beneficial to SEO. This was covered by this excellent article last year in Econsultancy about two UK newspapers’ ability to rank for the term ‘word cup’.