Last April I spent a very rainy and cold Saturday traveling around Chicago with some friends, running in and out bookstores, collecting punchcards. It was the last Saturday of the month—Independent Bookstore Day—and we were participating in the first My Chicago Bookstore Challenge: if you visited 10 of the participating independent bookstores throughout the city and suburbs, you received a 10% discount from all participating stores for the next year; if you visited 15, you got 15%. We succeeded in visiting 11 participating bookstores and several more that weren't on the list, just for fun.