Mashup / Remixing
From Social Patterns
A Mashup is an application, usually a web application, that combines the functionality of two or more web applications in a novel way to go beyond the intended use scenario of either of its component applications. A mashup utilizes the functionality provided by one or web applications, and combines it with data accessed through a public API either at the server-end, or in the client's browser environment.
Mashups can be targeted at consumers, or businesses. For more information, refer to an article on Mashups at Wikipedia