Was telling Hacker News that your Kindle edition is currently $2.99 part of your marketing strategy? Either way, thanks for the heads up. Purchased! :)
(I was thinking of buying it anyway, but this was too cheap to pass up.)
That wasn't intentional, but if a few sales came from it I can't complain about that. I made the page more explicit to point this out though, near the end. Thanks for checking it out.