Are you using Blogger from Google for all your blogging needs? If yes, and you own an iPhone, there’s an official Blogger application for iOS available for free so that you can share your thoughts while on the go.
You can write a new blog post and either publish it or save it as a draft while you are mobile and using your iPhone. You can also pick up where you left off on your PC and even add pictures available in your library (or take a new one using your phone’s camera). The application is free and is available in the App Store, though it will only display the interface in English.