Y Combinator-backed financial service ReadyForZero, which focuses on helping Americans pay down their $2.5 trillion in personal debt, is expanding its feature set today to include online payments. The new addition, a part of ReadyForZero Plus, will detect when you have new deposits in your bank account, and will then immediately advise you how to spend that money to more quickly pay off your loans, credit card bills, and more – before it burns a hole in your pocket.