Notes Section in the end of the reports needs Admin privileges to delete the random notes being posted(No tested) by many a users ,
Currently we have only the ability to make it private or public this doesn't help , its required for an admin to clean up the inappropriate note.
It will be too good if the note appears only for a particular period or time interval selected for the note to be valid and highlighted when the period is selected in the report,
For instance , If a metric is down like full flop due to some technical reasons no event is captured..... Suppose revenue is zero....
This can help reduce the same reasons to remember or explain to across various people in the Org.
Net net: Its really good but make it effective to use...