It’s the time of year for taking stock, making resolutions and then looking ahead to the next 12 months. Before turning the page on 2012 for good, we took a look back at our most popular stories of the year. Most were published within the past 12 months, although a few are enduring favorites from years past Some were profiles of industry leaders; others offered practical advice and trading tips. But they all have one thing in common: They sparked interest and, in many cases, discussion among readers.