NetNewsWire ... Click the name for the App Store download.
Great app. Create a login and then edit your feeds at NewsGator.
If you read an article you really want to send to someone (even yourself for later), simply hit the "+" icon on the bottom of Safari (after hitting the link in NetNewsWire to open in Safari) and then hit the "Mail Link to this Page"
P.S. It doesn't use all the memory the berries did when using Viigo.