McDonald's (MCD) shares fell early Friday after the world's largest hamburger chain reported third quarter profit below analyst estimates. The Dow component's earnings per share fell 1.4% compared to the same quarter last year, to $1.43, missing analysts' forecast by 4 cents. It's the second straight quarter the company's profit has fell short of expectations. Sales fell to $7.15 billion from $7.17 billion in Q3 last year, but still topped