Flat fee Vs pay – per – use: The movement towards pay – per – use model is likely to
severely affect user habits, particularly as this begins to penetrate web based delivery
systems. Pay –per- use models tends to discourage exploration and encourage viewers
/readers to examine items that others have already deemed popular (favoring best sellers
over more esoteric works). Libraries 1980s experience with pay per – use online indexing
and abstracting services led by many librarians to embrace newer flat– fee model that
arose such as CD - ROMS