This is fertile ground for small, enterprising investors. First, familiarize yourself with all the net-nets in the market. While Buffett thumbed through the Moody’s Manual page by page, there are plenty of free stock screeners on the Web these days to help you get started. Then as you go along, cross the ones off the list when you find a disqualifier, such as a hidden liability or a lawsuit that causes the stock to screen as a net-net even when it isn’t.