Lets say you have a site about "Weight Loss" for example, that doesn't rely on search engine traffic and only gets visitors from Pinterest. And you've filled the site with content that talks about everything to do with weight loss, and your main goal is to get clicks on your call to action box at the end of the content to your landing page. Is there any kind of optimization you should be doing with the content itself? How do you know that your content is good enough, and it's not just a waste of time having it on your site? And also, how would you determine whether your content is performing well? By how engaged the reader is with the article, or by how many people click through to where you want them to go?