Discussion on this matter seems to have come to a standstill. Not good for me (us). As we use evernote to share and collaborate we must be able to see an indicator visually on each and every note that has been comented on/changed by s/o else and not yet reviewed by the currently logged in user. A Function like Commenting on Blogs etc. would make this quite a snapp. A Indicator saying "look here, this has been changed since you last read it" at each note would be additionaly nice and a good workaround until a commenting function is available.