Related Clues:

• Billboards, for instance
• Sunday paper inserts
• Web site banners
• Newspapers need 'em
• Promotions
• Big Super Bowl expense
• Spots of a sort
• Thirty-second spots
• Ad of a sort
• Billboards, essentially
• Blogger's revenue source
• Classified info
• They're sometimes classified
• A lot of junk mail
• Things to zap