MICROSOFT'S THIRD-QUARTER EARNINGS CAME TO $3.14 billion, or 29 cents per share--up from $2.53 billion, or 23 cents per share, last year, the company reported Thursday. The MSN division posted a 4 percent gain in operating income in the third quarter, to $83 million from $80 million last year. MSN's increase was fueled largely by a $60 million, or 20 percent, increase in online ad revenue. That...