1. Apparently, my @Simplify card fails the Luhn algorithm/formula and that's what a lot of validation software uses. :(

    http://en.wikipedia.org/wiki/Luhn_algorithm

    RT @quinnnorton: I really can't think of a picture that captures the spirit of 2013 better. https://pbs.twimg.com/media/BcVfrHQCcAA7k5K.jpg