Speeed Reader is a Google Reader Client for Windows Mobile Professional devices. It allows native access and interaction to your Google Reader subscriptions. Google Reader is a great RSS feed aggregator that can organize all your RSS feeds in an intuitive manner. Using Speeed Reader, you can now view them on your Windows Mobile device, natively.

Changes:

Share articles using your Twitter account
Broadcast articles using the Google Reader Broadcast function
Open articles in your default browser (recommended for Windows Mobile 6.5 users)
Now view list of articles by page – this allows you to set the ‘Download Size’ higher than before – also you can download older articles for any given subscription
Mark all of your articles as read, you can also just mark a tag, subscription, or article as read as well
Settings are now stored in SpeeedReader.ini in the application program directory. Makes it easy to use the same settings across different devices
Redesigned settings UI
Additional performance enhancements, bug fixes, code simplification, and additional settings have been added

http://forum.xda-developers.com/showthread.php?t=516168