Fed up with banks? You’re hardly alone. Credit unions have grown dramatically in the last 20 years, fueled largely by high fees charged by commercial banks. Low rates for ordinary loans are also a big draw. But for all the growth, not much has been written about credit unions other than the occasional puffy story about how much a consumer can save by ditching their bank. That’s not to say that the growth has gone unnoticed at all – or indeed that it isn’t creating its own problems that need to be addressed.