At one point he was making $4k per month on credit card referrals[1]. [1] http://www.mrmoneymustache.com/2012/06/21/i-just-gave-up-4000-per-month-to-keep-my-fr

At one point he was making $4k per month on credit card referrals[1]. [1] http://www.mrmoneymustache.com/2012/06/21/i-just-gave-up-4000-per-month-to-keep-my-freedom-of-speech/ http://www.mrmoneymustache.com/2012/06/21/i-just-gave-up-400...