The IRS spends God knows how much of your tax money on these toll-free information hot lines staffed by IRS employees, whose idea of a dynamite tax tip is that you should print neatly. If you ask them a real tax question, such as how you can cheat, they're useless. So, for guidance, you want to look to big business. Big business never pays a nickel in taxes, according to Ralph Nader, who represents a big consumer organization that never pays a nickel in taxes. . . .