I have updated Deardiary.Net to allow posting using the Atom and XML-RPC protocols… Blah blah I know suffice to say, you can now download the WordPress app from the iPhone app store and manage your diary with it.
The URL should be simply http://www.deardiary.net and use your normal username and password. If you have multiple diaries it’ll pick that up and ask you which ones you want to administer from your iPhone.
You can add new posts, pages, comments, moderate comments and other stuff too. I highly recommend it for mobile users!