Have you noticed the grey rather inconspicuous row of icons now found at the bottom of each blog post? It's for people who would like to post on the item to friends and social networks. Run your cursor over an icon, it springs into colour and up pops a small balloon with information on what it represents: email, Blogger, Twitter, Facebook and Google Buzz. Click it and proceed.
I can legitimately say I've added this thanks to a request, although it did take a while and meant cutting and pasting some html code when the automated process didn't work. Enjoy.