Okay - I looked at the website in your link. Here's my seo advice (I'm making a wild guess that's what you want as your post makes no sense.) Employ someone who is a native English speaker - someone from the USA, Canada, Australia New Zealand, Ireland or the UK - to rewrite the entire thing. It looks like you might actually have some template and webdev products there - but the site is confusing, very badly written and gives an amateurish impression. And don't offer SEO, or I shall send wolves to eat you.
The back bone of SEO! is always remains the same Search Engines, Search Engines & More Search Engines
back links back links and more back links...I think it works the best in the long run..in short term I would say keywords in ur domain and quality content to have an initial audience and spread the word faster on your site or product.
Of course because without internet you can not do all these stuffs and not able to use all the channels of SEO, so if this question is "internet is back bone of SEO?" doesn't make any sense. Yes, if you are asking what is the backbone of SEO then I must say it's quality back links and traffic.
If he is asking about the backbone of seo, then it is good quality content. Content is king. Good quality content is what keeps visitors coming from search engines.
You make a great point that the addition of behavioral aspects to the algorithms doesn't reduce the importance of content, but strengthens it. First, you need to make sure you have something to say. Second, you need to make sure people can find it. And finally, you need to make sure it is easy to read one they get to your site.
I think the backbone of SEO are the proper keywords used in your articles, high search engine rankings through quality content and proper link building. Once these three factors are observed, you can drive traffic to your sites.
SEO is used to describe the process designing your web site in a way that it will appear higher in search engine ranking...