The book, Extremely Loud and Incredibly Close by Jonathan Safran Foer, contains a message typed entirely in phone digits. The message spans two and a half pages.
I built this application as a tool to use to decode it. Also, I thought it would be a challenge from which I could learn some things about application development, jQuery, and PHP.
I let the code take care of the hard work of comparing each possible combination of letters against a dictionary file and returning only those that matched dictionary words, and I let the user choose which word made the most sense in each place.
View the live application, see the code on Github, and read the several blog posts I wrote as I was building this.