A potential project? We discussed this, Mauro, Pierre and I:

Collaborative interactions by map annotation: investigating applications where people use locative media as a tool where the textual or graphical communicatoon is embeeded into a map. In our current work, these space annotations can be synchro (Nicolas' work) or asynchronous (Mauro's work). It can be specific to the locative media or integrate a standard environment (as a blog in Patrick's work). This raises many interesting issues, for instance if the users prefer to use "automatic location" (position by the system) or self-location (I declare where I am - and hence I can lie, or I can also say where I'll be); whether they write pieces where they are or where is the object they refer to. If the use graphics more than text. etc..