When building web-content, I've found that a lot of the effort that I've put into certain projects has been fruitless. Conversely, some of the things I've thought would be of nominal value to people turn out to be quite useful.
I like this infographic, via whoishostingthis, because it gives you a process framework and some helpful tools to course-correct and optimize your content.
Let me know what you think about this one.