I think Paul Walk’s analysis in his recent posting is clear and to the point.
To some extent I think Tim Berners Lee may almost be a victim of his own success. Seems to me his initial guidance to government (and others) was to get on with making the data available (at that time he was not stressing the need to provide the data in RDF format). Now that data.Gov has provided data TBL and others are understandably pushing that the data be in RDF format – to enable linking of the data.
Obviously we,promoting things semantic, want the data to be published and easily linkable. But sometimes, as per Paul’s posting, I think we make it all look a little more confusing than necessary, by ‘mashing’ (apols for pun) the terminology.