Add a bridge to blogs hosted on wordpress.com

This bridge can connect on different blogs hosted on wordpress.com.
I made some tests with the following blogs:
  * http://sorganiser.wordpress.com/blog-de-laurence/
  * http://betterclimberproject.wordpress.com/
  * http://wormgirlmontreal.wordpress.com/

The result was satisfying.
Please test with other blogs to validate the method