COMING THIS WEEK

MONDAY: Unsolicited junk e-mail, or “spam,” is one of the scourges of the Information Age. Tips on defeating the spammers in The Cutting Edge.

TUESDAY: The high-yield junk bond market hasn’t panicked over Brazil’s economic crisis, tossing off the risk that recessions will spread. Is this a sign of increased stability in such bonds? A look at buying opportunities in Wall Street, California.

WEDNESDAY: Stacks of uncashed paychecks made out to the company owners are an unhappy reminder of the cash flow squeeze at a Carson mail-order auto parts supplier. Small Business