I read your blog post and some of the comments, and I don't see how you can justify this claim: > As a result my site has had 100% uptime since its deployment

I read your blog post and some of the comments, and I don't see how you can justify this claim: > As a result my site has had 100% uptime since its deployment years ago Assuming your individual hosts did go down occasionally, how do you know how many of your visitors waited 2 or 3 minutes for the browser to try the alternative IP?