Posting via tags is a good skill to have. Many web sites (like MySpace) allow you to use HTML tags to spruce up a comment or an email. If it wasn't for my posts on MT, I probably wouldn't have the HTML tags memorized like I do now.
That said, posting via HTML tags is tedious...and I think I may have found my new favorite way to post to my blog.
Writer is like a specialized version of Word designed for blogging. It loads the stylesheet from your blog so your new posts have the same look as when the post is published on your blog.
Since Writer runs locally on your computer, it is very fast and responsive. It has a nice spell checker, which I absolutely depend on. You can easily add photos and Writer will automatically upload them when you are finished and ready to publish to your blog.
Even though this software is beta, it is very refined and usable. I did notice a bug once with a photo showing up in the background where it could not be deleted. I modified the view a couple of times (from normal to web layout) and the background photo disappeared on its own.
I started using Writer with my previous post, and plan on using it going forward.