At Credit Slips, Nathalie Martin has this post on high-interest loans to poor people. Here's the first paragraph of the post:
Those of us struggling with the issues raised by payday and title loans are consistently told to take morality out of the equation when considering these loans. Thus, it was refreshing to hear a recent presentation by Professor Alex Mikulich of the Jesuit Social Research Institute at Loyola New Orleans entitled “From the Peril of Predatory Lending to the Hope of Economic Justice: A Religious Social Ethical Perspective.” Rather than avoiding morality questions, Professor Mikulich focused exclusively on them in his eye-opening presentation at a recent Family Impact Seminar. He noted that the loans create many unjust results, and then explained that the literal translation of the word usury in Hebrew is to “take a bite out" of the poor. He distinguished usury from mere “interest,” which Professor Mikulich defines as part of a mutually beneficial relationship that is good for the community as a whole.

