Google Reader add a note without sharing the article

With the bookmarklet "Note in Reader", we can add an article to Google Reader.
Also we can add a note to the article with or without sharing the article.

Within Google Reader there is only a button "Share with Note" but no "Note only" button.

A solution is to add this feature to the Send To functionality:
(http://googlesystem.blogspot.com/2009/08/google-readers-send-to-feature.html)

Name:	Add Note
URL:	http://www.google.com/reader/link?url=${url}&title=${title}&snippet=${source}&srcUrl=${url}&srcTitle=${title}
Icon URL:	http://www.google.com/reader/ui/favicon.ico

Based on http://www.google.com/support/reader/bin/answer.py?hl=en&answer=147149

Update:
The simplest solution is pressing Shift+D, the iFrame (known by the bookmarklet) will popup.