PayPal cofound Max Levchin has decided to become the new CEO of Affirm, a finance start up that was launched last year. Affirm teams up with e-commerce companies to let customers get instant lines of credit for purchasing items on their sites. The company calculates the risk and sets the rate and structure for borrowers based on information found on their social media accounts, and the cost of the items they want to buy, instead of their FICO credit score. The company has raised $45 million Levchin hopes to raise that number to $50 million by the end of the year.