Idea: SEO analytic A tool that analyzes a website and gives re | Startups & Ventures

Idea: SEO analytic
A tool that analyzes a website and gives recommendations what kind of content to make to attract visitors from search engines.
You may think of such things do exist, not really. There are many tools to analyze SEO and traffic, but you should do keywords research by yourself. Plus, you need to analyze competitors to understand if your article can outrank them in search results.

It also would be good to see what kind of topics is not covered much, i.e. what articles people search for, but can't find a valuable piece of information. This is an important one because many articles are spam w/o giving value.