Mashups are useful

[myson]

Mashups can be defined as "a website or web application that seamlessly combines content from more than one source into an integrated experience". Marshups are an excellent example of the increasing variety of things search engines can do and what you can do with search engines and the different kind of experiences provided by Web 2.0.

For example by means of Google and Yahoo APIs, a broad range of data that was coded as to an exact geograhic location was integrated with maps and aerial images.

[plato]

Sorry, I am quite confused. What is the difference between a mashup and a RSS feed?

[fancy]

There are many sources of content for a mashup; feeds such as RSS is simply one source of content for a mashups.

Hope this helps