To some, Internet Yellow Pages (IYPs) seem like analog relics in a digital age, but according to recent comScore data, there were over 3 billion IYP searches last year, and that's a 27% increase from 2005. Some IYPs will list a business for free, others charge (and offer display and rich media ad opportunities as well), and according to Greg Sterling, an IYP investment would still be a smart move for companies targeting local searchers.