What i learned today?

Mashup:

• Mashup is a web application that combines data from more than one source into a single integrated tool.

it is not just to embed some data into your application, instead it is about gathering the data from different sources and process these data to add a value to it and produce your own new information from these data sources.
For example, embedding a youtub video in your application does not make it mashup application, where gathering weather information from one source and maps for the same place from other source then process the information and maps to produce a new weather map is a mashup application.

want to know more about mashup here