When you open up iBlogger, the first thing you'll see is a menu displaying many different blogging platforms, including Blogger, WordPress, TypePad, and other common platforms. When you select a platform, iBlogger will ask you if you want to set that platform as your default platform. You can say yes to this if you have all your blogson a single platform, because it saves you the time of having to pick your platform every time you feel like blogging. Otherwise, if you have all you blogs on many different blogging platforms and services, you can say no to this.
After you choose your platform, you have to enter your blog address. iBlogger will then prompt you for a password, and you can log in to your blog dashboard. From your dashboard, you can edit and post a new blog entry, moderate comments, and comment on others' blogs.
What I really liked about iBlogger was that they offer you their own rich text editor, specially formatted for the iPod Touch. The buttons are large and easy to tap, and the editor itself doesn't freeze up, which is a problem with many blogging platforms' text editors, especially WordPress.