think about it this way ( example) lets say you have 20+ companies that you run and each one brings you 1,000 dollars a month 'right' so thats a total of 20k month right = 20 plus headache everyday right?
or would rather have one company that makes you 20k+ and you have one headache,
think about it , why would you through your money at 20 or evey thousands of website that lukep is talking about , you coulda invest money in one main site