They key here is completeness. This site is so deceptively simple it makes me keep digging into it. From the simple interactions in the main nav to the placement of colors throughout it’s complete. “Finish” is one of those things that gives you a sense that something is well crafted, it’s not exactly the same as “Polish” either. As a side note, I love that twitter icon/illustration!

For an example of completeness & finish in what i’m talking about here, do a “print preview” on the site and you’ll see they’ve worked on making it look as much like the site design as possible. There is also a mobile design for the site as well, which is as well done as the full site.