Hi Brankica, wow what an extensive list. As a one-month old blogger this list is overwhelming so there were four things I have noted and will look into further are stumbleupon, digg, roundups and vark. I hope to implement them soon and will keep track of the results. As for the other sources, I will come back to this post to see what other sources to use next. I am curious to know from your experience, what are the Top 10 most effective traffic sources?

Organic Search is visitors who reach you by Googling or using another search engine which Google recognizes as a real search engine — mostly Bing and its second string, Yahoo. People using other search engines like DuckDuckGo or sites which are now commonly used as search engines but which have other purposes, like Pinterest, will show up in Referral traffic and in the case of Pinterest, in Social. If you have a good, well-optimized website, Organic Search will usually be your most frequent source. At our lab site, we do nothing to encourage other sources, so Organic Search is absolutely the top.
This quickly turns into a “chicken-and-egg” situation. Are fewer people coming to your site due to poor visibility in the SERPs? Or have you shifted your product focus, and is that why consumers are no longer interested in your brand? For a quick check, look at Google Search Console data, and pull positions and clicks by page. If position is staying relatively stagnant, this means your brand is not losing visibility in the SERPs, and there may be a bigger issue at play.

One of the most significant changes to Google’s algorithm over the years has been how it uses keywords to match relevant content to queries. The days of simply matching search terms to the keywords on your page are behind us, and Google’s machine learning algorithms are able to match the topical relevance of your content to the contextual meaning behind user searches.
Another special mention is Quora. The question and answer site is like a high class, actually-useful version of the defunct Yahoo Answers. Experts find questions in their industry to answer and provide detailed answers, either in the form of a moderately lengthy post, or in a post that links out to their websites. You, too, can take advantage of industry questions by answering them the best you can. Users can vote on the most useful answer, and it floats to the top, so the more useful you can be, the more exposure your link will get.
Good point,The thing with this client is they wanted to mitigate the risk of removing a large number of links so high quality link building was moved in early before keyword research. So it is on a case by case basis, but defiantly a good point for most new clients I work with who do not have pre-existing issues you want to do Keyword Research very early in the process. 
This is the number of views that you can test each month on your website.It's up to you how you choose to use them, either by allocating all the views to one test or to multiple test, either on one page or on multiple pages. If you have selected the 10.000 tested views plan and you run an experiment on your category page which is viewed 7000 times per month, then at the end of the month 7000 is what you'll be counted as tested views quota.