Merging Blogs

Admittedly, I haven't been great at posting on either of my blogs since the arrival of facebook & other distractions so I'm thinking about streamlining my thoughts somewhat and just posting to this blog. But apparently there is no way of merging blogs other than copying and pasting each post - this would take a very long time! So anyone out there know how to do this more efficiently? Having said that - I'm not getting much in the way of comments since the advent of facebook either (or maybe this blog has become a wingless duck?) so I probably won't get an answer to my plea for help!