* Slice a PSD into HTML/CSS
* Build a site with a MVC framework
* Write SQL without an ORM.
* Write SQL with an ORM.
* Be able to implement pre-written jQuery plug-ins
* Be able to write custom jQuery plug-ins
If they can write javascript without a framework, thats a bonus. If they understand design patterns, thats a bigger bonus.
White space for the sake of white space isn't an improvement, and doesn't always help consumption of dense amounts of information. Consider a book -- would you arbitrarily increase the line spacing to double spaced? No, because it doesn't actually help.
The part of HN that matters is the headlines, and scanning them looking for things that interest you. Good design isn't about being pretty, its about being pretty AND useful -- this design does not succeed at that second test.