It did not work selectively. I have disabled it all together.
I had used DIGG plug-in with Blogger. I do not really know how much people have used this plug-in to book mark the blogs but, when I was cross posting the Blogger posts to Wordpress, I always had this screwed up DIGG code. Today when I was exploring the Windows Live Writer, I saw that it is possible to enable or disable DIGG plug-in (for that matter any other common plug-in) individually for all the accounts you might have enabled in Windows Live Writer. This is the first post in which the DIGG has been selectively disabled for Wordpress site.