Ask HN: What's up with this @newsycombinator tweet used in 140proof ad?

I was using echofon today when I noticed this "ad" from 140proof in my stream.

Screenshot here: http://skitch.com/robotdeathsquad/detjm/echofon

It looks like it's representing itself as a @newsycombinator tweet, but links to a MaximumPC article that doesn't seem to be on the front page of news.ycombinator.com.

What's up with that?