Annozilla: A Firefox Plug-in for Annotation
I am delighted to report that there is a Firefox plug-in for annotation:
This is the the Annozilla project, designed to view and create annotations associated with a web page, as defined by the W3C Annotea project. The idea is to store annotations as RDF on a server, using XPointer (or at least XPointer-like constructs) to identify the region of the document being annotated.
This is precisely what I was goading Google into doing with Google Notebook.