It seems a lot of my best blog post ideas come when I'm busy doing something else. Unfortunately by the time I actually get to a computer several hours later the desire to write them has run out. Nor would using some sort of mobile blogging platform work. Even if I was inclined to spend the time squinting at a tiny cellphone screen I'm usually doing something that could preclude that.
Hmmm, I wonder how many great works of literature were lost because someone like William Shakespeare was too busy cleaning the yard to get them down.