One thing to note is that if you change the password on your blog, you'll need to update the password that the blogging bundle uses. I spent a few minutes wondering how to do this (going to "Setup Blogs", etc.) until I realized, *doh*, that I needed to update the password in Keychain (/Applications/Utilities/Keychain Access.app). It's actually nice to have all those passwords in one place and I think it's the first time I've had to use it to change something. Hey, it's just coming up to a year that I've had my Mac (and yes, I still love it on a daily basis!)
Hope this saves someone else some head scratching.
The Changing your password in the TextMate Blogging Bundle article by Aral Balkan, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial 2.0 UK: England License.
Aral. Thanks a bunch. Just about shot my system to hell figuring that one out.