Shakescode
The next chapter will be interesting: Will the publisher cave in and permit a Kindle edition?
For folks on Mac, etc., you may want to just Google about pre-packaged MAMP - Mac/Apache/Mysql/PHP. (I'm not sure whether there is anything set up for PHP 5.3 and latest MySQL yet.)
For a local testing server you shouldn't need to worry about performance.
But, I agree, it may be a nice supplement to my several-times-a-day visiting to HN.
"Founded in 2004 in Brooklyn, arc90 was created with the goal of designing and building captivating and forward-thinking experiences on the Web. Our strategists partner with you to identify opportunities and help execute on them at all stages including design, architecture and development."
They've got a bunch of interesting projects underway so they may sort of have "a full plate" - but it looks to me like they use Readability as a way to gain visibility and positive press, so hopefully they'll be resourceful enough to take this beyond v .4