Related Clues:
- Many posters
- Classifieds filler
- Blog's revenue source, perhaps
- Magazines' revenue sources
- Contents of some sidebars
- Unhappy, leader dropping to the floor flyers
- Sides of some buses
- Campaign buys
- App pop-ups
- Freemium game breaks, often
- Main source of online revenue
- Website annoyances
- 30-second spots, perhaps
- Some include coupons
- Commercials and billboards