My first thought was… wait, Posterous didn’t already have an iPhone app? My second thought was that I should probably check it out… so I downloaded the app and was amazed at how simple it is to start writing posts or uploading photos or images to a blog. You don’t even need to sign up for an account first — although I recommend doing so, because if you already have an account you can login and all of your updates will instantly be viewable on the web at your preferred address.
If you choose to start writing before registering for a free account, you’ll have to create one later and then sign in in order to associate the posts you’ve written with your new site.
Posterous also lets you link your account to Facebook, Twitter, YouTube, LiveJournal, and dozens of other sources so that every time you publish a new post it can be linked to other sources. You’ll need to visit posterous.com/autopost in a web browser to set up your accounts, though. You can’t do it from the mobile app, which is really designed to make it easy to write and publish posts… and that’s about it.
Posterous for iOS is available as a free download from the App Store.