Raw

I've to much dayjob work, otherwise I'd be on this right away:

Load stuff onto the clipboard from one page using the Live Clipboard trick, navigate to a Timeline-based page and paste. Resources with date properties appear.

Benjamin Novack's SPARQL Web Clipboard demo wiring should help, as should the SparqlTimeline code I posted the other day.

(I've still not quite got my own hCalendar -> RDF -> Timeline thing finished yet, I think too many optionals in my query for it to finish this century...)

See also: Lee and Benjamin's notes, Tim Berners-Lee's RDF Clipboard slide