[RDFa] Use Case Document on the Wiki, UPDATE

Ben, All,

Another update w.r.t. gathering UC for RDFa is now available:

In the RDFa UC page [1] I added three new UC:

 + PDF metadata reuse
 + Metadata on Mobil Devices
 + Blogs

Cheers,
	Michael

[1] http://www.w3.org/2006/07/SWD/wiki/RDFa_Use_Cases_and_Requirements

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 Michael Hausenblas, MSc.
 Institute of Information Systems & Information Management
 JOANNEUM RESEARCH Forschungsgesellschaft mbH
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