This indicator checks in with Blogger every minute to see if there’s an outage coming up. This means that, even if you’re working on a long post and haven’t refreshed the page in a while, you’ll get notification just the same.
As an added bonus, if the indicator can’t get in touch with Blogger, either because we’re down or because you’re not connected to the Internet, it’ll warn you that you probably won’t be able to post.
Despite all this, if by some trick of fate you lose a post — to a Blogger outage, to network trouble, or to a browser crash — you can usually recover it by using your browser’s back button or the recover post link on the posting page.