Highly accomplished author and journalist Philip Ball has a wonderfully insightful blog called homunculus, beside which NanoBot appears to be the little man. He provides some great cutting-room-floor material from his Nature articles, including this post on fear of nanoparticles.
And Ball is all business on his blog. None of those immature, off-topic ramblings that annoy so many blog readers. Ball's Blogger profile brags that he (links added by me) ... "will not include any pictures of or stories about my holidays, friends, dogs, or gripes about the world ..."
You tell 'em, Phil.