Now, beginner’s ask question about this tool, how we do SEO of post when we are using Windows live writer for blog publishing. When I had started using Windows live writer as beginner blog writer but time to time I learn myself about this tool, on that time I had similar questions like you. I don’ remember exact time and years, and now WordPress SEO plugin All in one SEO was the best plugin at that time. You also see various new plugins like WordPress SEO by yoast, SEOPressor replaced All in one SEO.
Windows live Writer Blog Post SEO
If you remember I mentioned in above paragraph about Mac OS, I am sorry to say that Windows live writer doesn’t support directly so, here I would recommend you to use this tool on Windows, if you want to use it.
The only way to do effective SEO of post is write quality article, don’t ignore heading (H1 and H2) and add good keyword density,