Now I have not tried this out yet, but there is a new app out for the iPhone that allows you to update you WordPress blog from your iPhone.

Here is what it is described as:
“Robust but simple to use, the WordPress for iPhone Open Source application allows you to create and edit content on your WordPress blog(s) with support for offline use.”

I am really interested to test this out as I was a little jealous of the Typepad folks who had an app.  Has anyone tried it out yet?

http://iphone.wordpress.org