It's a seriously cool feeling to see worlds collide like this. The first half of his book Mr. Penumbra's 24-Hour Bookstore is one of my favorite reads, but I had no idea he was actively programming as well (although it totally makes sense in retrospect).
I also really enjoyed Mr. Penumbra's 24-Hour Bookstore. Looking back on it now I felt like it captured a more hopeful / innocent time in the way it technology and the ways it has changed our modern society.
