Multiple Copies On Sites Revisited

I think deleting my twitter account solved the multiple copies of my posts. I only get one copy of my posts from my blog or friendfeed on friendfeed and facebook.

Multiple Copies On Sites

I have multiple copies of my blog, friendfeed, twitter, etc. entries showing up up on most of my sites. I have tried to tie them together so I will get only one copy on all sites by posting on only one of them (no matter which one I post on). It doesn't seem possible. If any one knows how to do this please let me know. This is posted on my blog.