Intel has released a Mashup creation tool called Intel Mash Maker.

<< Intel® Mash Maker is an extension to your existing web browser that allows you to easily augment the page that you are currently browsing with information from other websites. As you browse the web, the Mash Maker toolbar suggests Mashups that it can apply to the current page in order to make it more useful for you. For example: plot all items on a map, or display the leg room for all flights.

Intel® Mash Maker learns from the wisdom of the community. Any user can teach Mash Maker new mashups, using a simple copy and paste interface, and once one user has taught Mash Maker a mashup, this mashup will be automatically suggested to other users. Intel® Mash Maker also relies on the community to teach it about the structure and semantics of web pages, using a built in structure editor. >>

http://mashmaker.intel.com/

<< Does Intel® Mash Maker export the data it produces in a form usable by other tools?

We'd like to support this, but have not yet worked out a good way to do so, given that Mash Maker is implemented as a browser plugin. Watch this space... >>

NO!!!! It kinda reminds me DabbleDB, which LETS you extract and export the data from a web page, but well, DabbleDB don't automatically create mashups for you.