By using Google Reader’s new Send to feature, you can easily share posts with others via Twitter, Facebook, StumbleUpon, Digg, etc. Once configured, you can post the article to another service by clicking the Send to button and selecting the desired service.
1. Go to Google Reader and login to your account.
2. Go to the upper-right corner and select Settings.
3. Select the Send To tab.
4. Use the checkboxes to select the desired sites and services you wish to share posts with.
5. Go back to Google Reader and read your feeds as usual. When you find an interesting post you wish to share, go to the bottom of the post and click Send to. Select the desired service.
Log into the service, make any necessary changes and share the article. You will then be returned to Google Reader so you can continue to browse for more goodies to share.