When Indiana governor Mitch Daniels announced a budget surplus for the latest fiscal year, the windfall came as good news for his state's employees, some of whom received bonuses of as much as $1,000. Indiana is not alone. An increasing number of states are reporting black ink. The Associated Press reported that 15 ran surpluses for fiscal 2011, up from 10 the year before. Generally, a surplus is a sign that a state's economy is getting better. But that metric doesn't always tell the whole story. It could simply mean that a governor has slashed and burned his way into the black. Checking the balance in a state's "rainy day" reserve fund is a better way to reveal the real winners.