Best Solution for this if you are using Google Chrome. You will be able to read the full text of a story inside Google Reader itself but without going through any transformation service.
To get Started, simply install the super Google Reader extension inside Chrome and it will add a new menu called the "Super Setting" to your feeds page. Then choose the "Readable" option for all the partial RSS feeds that are you are subscribed to in Google Reader.
That's it. The next time you expand a partial item inside Google Reader, This extension will automatically fetch the full content of that page in real time and will display it in place of excepts. You can use the "pre-fetch" option to let it process the full feed in the background and this will reduce the time it takes for Google Reader to Display the full Text entries.
Features -
1. Full Feed content on a per-fed or folder basis.
2. Provides 3 modes for viewing an entry
3. Works in Expanded of list views
4. Display the hostname of the entry in the subject line
5. Pre-fetch readable content for unread entries
6. Specialized readable content for popular entry types such as YouTube videos, Vimeo Videos and wikipedia pages.
7. All Setting are transparently built into Google Reader.
