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Account
Represents the right to use a computer connected to the Internet

Adjacency
Time period that immediately precedes or follows a radio or television program, also called a commercial break position

Advertisement
Paid communicated message of a persuasive or informational nature designed to influence thought and/ or purchase patterns. An advertisement on a broadcast media is called a commercial.

Advertising Weight
A measure of the impact or exposures achieved or planned in an advertising campaign

Advertorial
A combination of an advertisement and an editorial article.

Affiliate
A broadcast station (television or radio) with a contract designating the broadcast of certain network programs and commercials.

Agate Line
Standard unit of area in print media used to calculate the cost of advertising. Measures 1/14 inch height by one column width.

Alternative Media
Non-traditional media types such as flyers, shopping cart advertisements, video kiosks, and telephone directories

Arbitron Company
Company that provides media demographic information primarily focusing on the broadcast audience; radio and television.

Archie
An internet tool used to find files. Can be downloaded by using FTP.

Audience
The total number of people reached by an advertising message through one or more types of media.

Audience Composition
A measure of the makeup of a metric audience by age and gender.

Audience Profile
Detailed information on a media audience, including a demographic profile and socioeconomic profile.

Audience Share
Percentage of the audience who are of interest to the advertiser and who actually receive the advertising message.

Availability
Also known as Avails, the time period available in broadcast media in order to purchase a commercial message.

Average Audience (AA)
The number of individuals (or households) tuned into an average minute of TV or radio program or who read an average issue of print media.

Average Frequency
The average number of times an audience is exposed to an advertisement in any medium or combination of media.