Always have a back-up of your post. That said, I have been playing with Live Writer which is very nice. But I'll stick to writing the posts the old fashion way. Online. Sadly W.Bloggar is not compatible with Blogger Beta. But still if you're on the fence about migrating to blogger's beta platform (hint, hint emejota), I say go for it. Tags/labels and the ability to create your own widgets. All good stuff.