In an unrelated note, this "Google Blog" thing appears to have [at least] three different domain names that redirect to the same url: https://blog.google.com ht

In an unrelated note, this "Google Blog" thing appears to have [at least] three different domain names that redirect to the same url: https://blog.google.com https://blog.google.com, https://blog.google https://blog.google and https://googleblog.com https://googleblog.com, why is that?!