That's brilliant thanks.
I am looking into a slightly different approach. I wrote a standalone windows app last year that downloaded all my images using the Blip API.
I haven't used it since I first wrote it (to get all my image thumbnails to make a collage) however I a pretty sure it will download all images and text with a bit of tweaking.
I am away at present but at the airport on my way home so I hope to look into this tomorrow.
It's good to know that you have been able to access the Blip API because I was slightly concerned it may have been b*gg***d up during the relaunch