Visit your google profile page (e.g. mine is http://www.google.com/profiles/activescott) and view the source. You'll find a "link" element like so:
<link rel="alternate" type="application/atom+xml" href="http://buzz.googleapis.com/feeds/YOUR GOOGLE BUZZ ID/public/posted">
Take the url you find there in the href and add it to friendfeed as one of your services using the "Custom RSS" service (see friendfeed's help).
Then go to your friendfeed settings and make sure you are publishing your google buzz service entries to twitter. See this friendfeed help article for info on how to do that.
Now post to google buzz and watch your posts end up in twitter!
