Does exactly what it says it's gonna do. Nice appearance.

Easy to install and use. Really practical to leave notes near the areas that we want the editors pay attention and with the big advantage that are not visible when we the user log out.

Better than perfect. Just beautiful.

Leave a message for the next editor.
I'm building a site design out with free rein as to what I use. I use this block to add notes visible in edit mode so that they know how I did it.

I used the Stickies add-on in 5.6 and was so happy to find this in 5.7. It's very helpful for instructions to untrained users who I've given the ability to edit their directory listing. It would be great to be able to display the text only without the comment delimiters /* */. They don't make sense to regular users and make some think something is the matter.