My 3-year obsession with one free budgeting app helped me save over $15,000

WHY I STARTED The service was founded in 2006 by entrepreneur Aaron Patzer. In 2009, it was bought by Intuit for a reported $170 million. Last year, the site claimed to have over 20 million users. In June 2013, I became one of them. I began using the site as a newly...