I'd call this a fruit of this kind of DNS abuse. Yeah, OK, it looks nice, x.usesthis.com or whatever it is, but it forces you to make a new DNS lookup for each

I'd call this a fruit of this kind of DNS abuse. Yeah, OK, it looks nice, x.usesthis.com or whatever it is, but it forces you to make a new DNS lookup for each page, instead of using cached www.usesthis.com/something. And, as we can see, you can even make the address invalid. It's quite sad. :-/