Very cool Semantic Web use case Demo via Piggy Bank's sever component called "Semantic Bank". These complimentary projects are part of the MIT SMILE project. As you can see Web 2.0 and the Semantic Web are mutually inclusive paradigms as reemphasized
Piggy Bank is a Firefox extension that turns your browser into a mashup platform, by allowing you to extract data from different web sites and mix them together. Piggy Bank also allows you store this extracted information locally for you to search later