Rated 5 out of 5 stars

Please UPDATE !!!
I would switch to using Firefox 3.6.
But QuickNote don't work with Firefox 3.6...
I use regularly Quicknotes!
mikkok

This review is for a previous version of the add-on (0.6.0.4). 

Note that you can install the version compatible with Firefox 3.6 on the add-on page under the Beta channel heading. That version will soon be distributed to all users via automatic update.