I don't generally think of my own list as a traffic source, because those are people that subscribed and keep coming back, mostly because of good content. This is more tutorial about where to get fresh traffic from in case a person is not using some of these sources already. Where have you guest posted, I haven't seen any, would like to read some of those :)
This traffic source comes from search engines like Google, Bing, and Yahoo. Remember, paid search ads or PPC (pay-per-click) advertising are not included within this source category. If you choose to run a paid advertising campaign for your business, it will not affect your website’s ranking within an organic search. Organic search is obtained through natural placement on search engine results, without paying for it, through search engine optimization best practices.
For a long time, digital marketers summed up the properties of direct and organic traffic pretty similarly and simply. To most, organic traffic consists of visits from search engines, while direct traffic is made up of visits from people entering your company URL into their browser. This explanation, however, is too simplified and leaves most digital marketers short-handed when it comes to completely understanding and gaining insights from web traffic, especially organic and direct sources.