Financial education website NerdWallet is now featuring CDFI banks and credit unions as a socially responsible alternative to big banks. NerdWallet is a resource that enables users to search a database of hundreds of financial products to find the best products. To have your institution's products listed on NerdWallet -- a great way to make them visible to a young, tech-savvy audience -- sign up for free here. In its writeup of CDFI depository institutions, NerdWallet highlighted New York based Spring Bank. Before Spring Bank opened, many low-income residents relied on check cashers and other high-cost alternative lenders. Someone lacking a strong conventional credit history might successfully apply for a loan at an 18 percent interest rate at Spring Bank, while a similar loan from a payday lender might charge up to 400 percent.