My guesses are: 1) maybe it's a mockery of the redundancy of using "www" in URLs, 2) a clever prank on anyone that attempts to communicate the site's address verbally and doesn't know that the sub-domain portion is optional, 3) a way of making the link catch the eye and create enough curiosity to result in a click.
Just guesses though, I really couldn't find anything concrete about it.
Just guesses though, I really couldn't find anything concrete about it.