It works almost identical to Semantic Radar, in documentes loaded by the browser it detects:
and displays a little clickable icon to open RDF in an external viewer (you can edit the viewer in the plugin options by default I’ve set it to SIOC Browser).
Hopefully, when i get more time I’ll hack the plugin to have more preferences and add few other things. For now, it does its job good enough to use (for me), this is how it looks:
At the moment, I’ve published it only on Google Extensions website, if you feel like testing, head over there and install it. So far I only tested how it works on Mac Os X, running Chrome 5.0.342.9 beta, so feedback welcome!
Update: tested for Windows7 + Chrome 220.127.116.114. Works as well!
Update2: New version out! RDF Detective 1.3 now supports RDFa detection (renders a different icon and allows to open RDFa in a different viewer then RDF). I also added experimental support for detecting what RDFa namespaces are used and in relation to that render the icon in different ways. Currently 3 options: if there is only Facebook or Opengraph namespace their specific icons get rendered, if there is more annotations of other namespaces then a generic RDFa icon is shown.
Update3: The source code for the extension was published at: http://github.com/cyan-ide/rdf_detective