The Clue
Some Web site features (3 letter answer)
The Answer
ADS
Tags
Notes
The answer ADS is very common and appears about once every 48 puzzles.
Related Clues
Classified ___
Commercials
Infomercials
Pitches
Plugs
Showstoppers
Spots
Circulars, basically
Classified items
Classified sect.
Coupon sites
Deuce followers
Google moneymakers
Inserts, often
Magazine features
Mag's moneymakers
Newspaper items
Newspaper part
Plugs, of a sort
Public plugs
Sellers' notices
Some promos
Some teasers
TV commercials
TV interruptions
TV spots
Words from sponsors
Zappers' targets
Newspaper items, for short
Newspaper revenue sources
PC pop-ups
Pop-ups, e.g.
Some are classified
Things often zapped
Internet pop-ups, e.g.
Some Super Bowl highlights
Spots before your eyes?
Things that pop up annoyingly
Some Super Bowl Sunday highlights
TV networks' sine qua non
Definition
AD as a noun:
1. (ad, advertisement, advertizement, advertising, advertizing, advert) = a public promotion of some product or service