Thank you for posting this, could be useful to someone.

But let me remind you that this post does not fall within the general guidelines for HN posting. For your reference:

http://ycombinator.com/newsguidelines.html

Hacker News Guidelines

What to Submit

On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.

Off-Topic: Most stories about politics, or crime, or sports, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic.