I am too much late to commenting on this article. I want to read "How much get Organic traffic by SEO", found your your article on top & really very interesting. James Norquay, you did good research.I think Now days google block mostly SEO activities. Is this worthy for current marketing scnerio?If any other post to related strategy for increasing Organic traffic, you can reffer me.
I would also advise to continue doing what works. If something you have rolled out generates great traffic and links bring out a new version of the content, for example the 2012 version worked effectively bring out the 2013 version of the content. Another effective strategy is to make the piece of content into an evergreen article which you add to over time so it is always up to date.
Now, it is not that these sites are not interested in Google users. In fact, they have hired us to help them increase their share. However, they are getting so much traffic from sites like Facebook that it seems there is less urgency about attracting this traffic and less willingness to change the site to meet organic standards. Not long ago, sites would urgently and unquestioningly abide by Google’s standards to court that traffic.