Windows Live Writer is software that lets you write and save blog content on your computer, allowing for offline editing and previewing. But it does not have any built-in backup options, and does not allow you to change the location where it saves your content. Backup tools like SugarSync and Dropbox can both be used to automatically sync and backup your Windows Live Writer content.
Windows Live Writer
Fix For Windows Live Writer: Temporary Post Used For Theme Detection
In Windows Live Writer, the desktop blog writing program, WordPress users may see a theme detection error. When updating the offline blog theme, a temporary post shows up in your blog’s RSS feed. A solution is here.