Milton Friedman and Doubtful Authenticity

Since registering a domain name with the goal of making a profit, I've been wondering if my investment will pay off, and it reminded me of a funny anecdote I once read about Milton Friedman regarding doubtful authenticity:

    One Saturday afternoon in downtown Chicago, Milton Friedman, the famous free-market economist, was shopping with his wife.

    "Look Milton!" exclaimed Mrs. Friedman. "There's a $20 bill on the sidewalk!"

    "Don't be foolish, my dear," replied the Nobel laureate. "If that was a $20 bill, someone would have picked it up by now."

Source:
Contemporary Strategy Analysis
by Robert M. Grant - page 223

If there is money to be made on AdvocateBlog.com, wouldn't the experts in the business already have registered that domain name? We'll see what happens.