I begrudgingly tried Windows Live Writer while at SIGGRAPH. Think of Writer as a word processor that uploads to your blog. Before trying it, I was fine going online to my blog, writing updates and uploading pictures. If I couldn't get online, I just didn't blog. Connection taking too long? I got frustrated and didn't blog.
I didn't know what I was missing!
What I like: offline post creation, WYSIWYG, easy tags and formatting.
So far the only thing I don't like is that there seems to be a bug that un-centers images when I upload a post. I have to redownload the post, center the images again, and reupload.
I wasn't sure I could do this, but I just Alt-PrntScrn'ed the window and pasted it into the body text. Nice! I figured it would, but nice to know it works like expected.
I'm using it exclusively for blogging moving forward.