I’m testing that right now. This post is written with google docs & spreadsheets.If this works ok, we’ve another piece that can be loosely joined…
Will it work with images:
wordpress edit: it was not only written but also published using google docs. The posting did work allthough the title was not displayed… to use google docs & spreadsheets as a blogging tool it’ll need something extra i think 
But i have to say that it has very nice features, like publishing your document on the web If google adds some wiki-features to this baby then they got them selfs a very interesting collaborative tool!!