What a shock to see this on here - it got crossposted to Reddit too and blew up. So did my inbox. Thanks to all of you who had kind words about this project, and thanks to Jake Albaugh (http://jakealbaugh.com/) who inspired this.
That's not the reverse side, that's Unicode characters that look like upside down ASCII. if you look at the bullet points and underlining, you can see it's just asterisks and hyphens rather than dots and lines.