Question on using Sticky Notes on a LC form

I have a form that has been created using LC2
It is PW protected for changes (not to open)
I plan to enable Reader Rights using Acrobat 9
Users are using Reader
 
I am trying to add a sticky note to the form and unable to do so.
I get a message
"This form is interactive and has special features. To Save a copy of it....."
 
Question:
Is it possible to allow sticky notes on the actual form, or does one have to create another form to do so?
 
If not possible, then why so? (ie because it is a LC form?)