Do you know where your visitors are coming from?
What’s your most popular topic?
Why are people buying your affiliate marketing product/service or why are they clicking on your Google Adsense ad?
Do you know?
Sure, you could do research by checking out the RS ratio (Results-Search) and get a rough feel for the number.
But the bottomline is: Do you know?
Is there a cost to not knowing?
Let’s put it this way, it will hurt you in the pocket.
And severely hurt your ability to grow the business.