I have been looking for a blog editor for my phone for a while. This would allow me to post to my blogs without using the web interface or through a SMTP gateway. Travelling Blogger looks to be a potential solution.
This is a Windows Mobile application that lets you create and edit posts on a blog that supports the MetaWeblog xmrpc API. Once I configured the information for my blog, it pulled down the list of my existing blog posts. Then I was able to create a new blog entry.
This was starting to look promising, but then I realized that it wasn't a WYSIWYG editor. This means that I would have to enter all of the html tags manually. Travelling Blogger doesn't support copy and paste from Windows Mobile 6, so it is not easy to transfer text from the built-in browser.
I was willing to overlook this, and plan on using Travelling Blogger just to post simple text entries, but then it wasn't able to actually post anything to my blog.
I guess I will just use the web interface, or just wait until I get back to my computer.