I just want to make a brief post about this "web clipboard" using eRDF, acknowledging its existance. What I'm hoping to do with the BlogMatrix Platform is have every page available in alternate formats -- in particular, RDF in XML and N3 -- and then use some sort of microformat way of linking "important" objects between the HTML and the RDF. This would allow for clever things like copying full address book entries (even though we may be only display a name), reblogging, copying events...
Yes, all very vague. We'll see how it works out.