Commercial applications using Linked Data

Hello All, 

I am looking for commercial applications which involve use of Linked Data principal or datasets. Example of such applications would be BBC Music, IBM Rational's usage of Linked Data as an application integration technology. 

By commercial applications, I mean something which has been deployed or will be deployed in near future on any platform (mobile, web, desktop..) AND has a significant user base. I am specially interested in applications which exploit multiple datasets (>2). 

I am aware of the following, but reaching out in case the list does not includes any new commercial products or deployments.

http://www.w3.org/wiki/SweoIG/TaskForces/CommunityProjects/LinkingOpenData/Applications and other hyperlinks from the page
http://artofsystems.blogspot.com/2009/03/linked-data-end-user-applications.html
http://linkeddata.deri.ie/sites/linkeddata.deri.ie/files/lod-app-tr-2009-07-26_0.pdf

Will appreciate any pointers.

Best

Prateek

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Prateek Jain Research Assistant, Kno.e.sis Center Wright State University Fairborn,Ohio 45435 http://wiki.knoesis.org/index.php/Prateek