What defines good web content

How do you know it's good web content. You have to be an experienced web content writer to realize the flaws in your work. There is no magic formula in finding what is good and what is wrong but there are some rules that define somehow what is consider to be good content. The most important things are uniqueness, freshness and full of informations. Then comes the way the web article is written. A good technique ensures that all that useful information you provide in your web content it's gonna be read.