Moving my Google Loch Ness Blogs

I wonder why after Google have allowed probably millions of people to publish blogs to their own websites they now decide to stop allowing it. It is a bloody headache for people with a number of blogs to migrate! and many hosting companies don't allow editing of  DNS or Cnames.

At least I suppose Google have done their best to make migration smooth and this video helps to explain it.
http://www.youtube.com/watch?v=ZXEbbpLJEok&feature=player_embedded#