"Imitation is the sincerest form of flattery." But this is way more than that.
And it's not just the design. It's the code (most of the HTML + CSS) as well.
Now I have (or used to have) tremendous respect for the team behind THN magazine, but this is just blatantly copying and ripping off our entire site.
Update: Turns out (as one of our reader pointed out), they didn't change our Google Analytics code as well. And they still sending traffic stats to our analytics account everyday.