For content that is not sensitive tokens can be used to create unique feeds that each user can subscribe to. In my particular case I wanted to create an RSS feed for each user that only included content they had authored. To accomplish this I installed the Token Authentication module and the Token Filter module. These two modules have similar names, but the Token Authentication module does not relate to the rest of the Drupal Token modules.
The Token Authentication module creates unique tokens for each user. The unique tokens can be used to authenticate access to content that is not sensitive. On the Token Authentication configuration page, RSS feeds can be added to the authentication list. Any RSS feed on the Token Authentication list can be accessed by http://[SITE URL]/RSS.xml?token=[UNIQUE USER TOKEN]
For my site I created a view of content that was authored by the user. When the user subscribed to the RSS feed associated with the view and added their token to the url, then they could read the content from their RSS feed reader. To make it easy for users to subscribe to their personalized RSS feeds I created a link that added their token to the RSS feed address. I used the Token Filter module to dynamically update the RSS link based on which user was viewing the page.
The Token Filter module allows for text formats to first replace tokens with values and then apply formatting. I created a new text format and named it 'Token Filter' and included the same formatting as the Full HTML filter plus the token filter. Now I can use the token [current-user:tokenauth-token] any place I want the user's unique token to appear.
On the view I added a Global Text area with a link to the RSS feed where the href was specified with ?token=[current-user:tokenauth-token] appended to the url. Now any user who clicks on the RSS feed link will be sent to their unique RSS feed.