Sending notes and audio is not necessarily the same as Sharing them.
With some Connectors, you can indicate a share setting when you configure the Connector. An example is sending to Google Docs. You specify with whom you wish to share your sent notes and audio when you create shortcuts for the Google Docs Connector or when you send from Livescribe Desktop.
With other Connectors, sharing is pre-set on the destination side. The Pencasts you post to Facebook have the privacy settings you choose in Facebook for posts to your wall. The notes and audio you send to Evernote have the privacy setting you choose in Evernote for the destination notebook. The notes and audio you send to Computer have the access rights of the destination folder on your computer.
With still other Connectors, the notes and audio have a private setting. You can decide to share them later at the destination side. For example, sending to MyLivescribe results in a Pencast with a private setting.
Finally, with some Connectors, the sharing is implicit. When you send email to individuals, you are sharing it at the same time.