Share some thoughts of how you might use web annotation as a collaborative activity, or share different ways in which you already use tools like Hypothes.is.
Remember, too, that comments on Google docs (or similar) are a form of annotation, as are things like Vialogues for annotating / discussing video.
Have a look at what others are sharing, and see if you can build on their ideas.
My web annotation journey has already successfully generated a collaborative response. I can see how this approach can be used: Publicly it would enable anyone with ‘hypothes.is’ installed and open to respond to comments made, and thus start a (hopefully) interesting dialogue, and privately (e.g. via NZEXT102 Private Group) it might be used between colleagues when analyzing, say, a piece of research.
In either case, connections can be made or reinforced with others who have similar interests, evidenced by the fact that everyone was reading the same article.