Advertising
Advertisers will have an increasing ability to reach specific audiences due to changes in digital technology.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Advertising outside Perivale sports... (C) David Howard :: Geograph Britain and Ireland."
http://www.geograph.org.uk/photo/3066076
Geograph
CC BY-SA.