Ok, understand what you mean. But for the sticky notes product, this way it works now with the member ID is not a cool user experience.
For example I send user x a sticky note with attachment, after I want to send user y another note. Now in the editor is the attachment kept from the message to user x.
Now I have the choice, send the message without deleting the attachments means the other user gets the same attachment sent to user x. Normally I don't want this. So I have to delete the attachment what results the user x from the previous message looses the attachment. Even if he haven't read it.
Difficult to explain, sorry. But I hope you understand how I mean it? Thanks.