Related Clues:

• PC pop-ups, e.g.
• Product placements, e.g.
• Sponsored messages
• Paid spots
• Circular staples
• They may be classified
• Some pitches at baseball stadiums
• They often pop up
• Some magazine spreads
• Cyberpage pop-ups
• Spots on your TV
• Super Bowl highlights
• Some pop-ups
• They're often classified
• Much of magazines