Go to local events or Meetup events and connect with bloggers in your industry. An example of an event I run to connect with bloggers and people in the online marketing word is: http://www.meetup.com/Online-Marketing-Sydney/. Make friends first and then try to gain guest posts later. I am not really a fan of websites which are flooded with guest posts one after another; it is the type of thing which Google is just waiting to target.
RankBrain can have an impact on your keywords campaigns. When you are defining your keywords, you are looking for relevant terms that respond to customers queries. This is how a successful SEO strategy works. And logically, if you are picking keywords your audience is not searching for, you campaign will have no chance to succeed. This is where RankBrain can play a role.
The term “organic traffic” is used for referring to the visitors that land on your website as a result of unpaid (“organic”) search results. Organic traffic is the opposite of paid traffic, which defines the visits generated by paid ads. Visitors who are considered organic find your website after using a search engine like Google or Bing, so they are not “referred” by any other website.