Blogger are catching up fast and their new Mobile Template is pretty slick. It uses your Blogger Blog's existing Template and modifies it for mobile screens. This is literally one-click formatting-and-publishing. It looks really well on my iPhone and it will be interesting to see the mobile usage on it change over the next few months - if any! Here's what the blog looks like using the Blogger Mobile Template Preview:
It's getting hardrer to move to WordPress (although I'm dual-blogging - here and on our SEO Glossary) Actually, we always use WordPress, I'm just stuck on Blogger - especially as the features are growing so quickly and its so easy to maintain and edit.