This is pretty much correct. Upspin is way more filesystem-like than Camlistore, but I would emphasize Upspin's single global name space, rather than the filesy

This is pretty much correct. Upspin is way more filesystem-like than Camlistore, but I would emphasize Upspin's single global name space, rather than the filesystem-ness. I think both Camlistore and Upspin have promising models.