Cyrus Daboo said the following:
So perhaps we need a slight variant here: /public/comment /private/commentWith these two top-level entry segments, we have a clear distinction between what is shared and what is private. Registered annotations would have to define annotations in each as appropriate. Clients could create unregistered entries in either to achieve the behavior they need. A server that does not support per-user annotations simply does not support /private.
I'm a bit late with this comment, but: That variant works for me. Barry