For what it is worth I'm pretty sure Land of Lisp author Conrad Barski is an HN user as well. I think we talked at an HN meetup (but I don't know his id offhand).

If you are reading this Conrad, congrats! The book looks great and seems very well received.

I'm curious, does a "slashdotting" create a noticeable blip in traffic or book sales anymore?

Conrad is http://news.ycombinator.com/user?id=drcode

His post announcing the book is at http://news.ycombinator.com/item?id=1836935

Yes- The slashdot book review took my Amazon rank from ~1700 down to ~550 for a few days (which is a great rank for a niche-y programming book...)