Network Publisher

Plugin enables you to Automatically Publish your Blog Posts to Social Networks.
Currently Supported Networks include:

1. Facebook Profile
2. Facebook Pages
3. Twitter
4. LinkedIn
5. MySpace
6. Yammer
7. Yahoo
8. Identi.ca

Plugin also supports Publishing your Blog Posts to Twitter via OAuth
Download

Code:

http://downloads.wordpress.org/plugin/network-publisher.1.0.11.zip