A group of people or organization of which an individual respects, identifies with, or aspires to join, e.g., membership or associative groups.
A premium offered to customers for helping sell a product or service to a friend or acquaintance.
Indicator symbols located in the margins of negatives to be used as guides for perfect registration.
Discounted magazine space which is sold to help fill regional editions of the publication.
The percentage of individuals that renew their print media subscriptions to extend beyond the previous expiration date.