The document discusses the growth of location-based services (LBS) in mobile phones. It notes that location is becoming mainstream, with over 230 million wireless subscribers in the US alone. Sprint and Verizon report that 80% of their subscribers now have GPS-enabled phones. While AT&T and T-Mobile are still catching up, the LBS market in North America grew from 4 million users in 2006 to a projected 20-52 million by 2011, reflecting location services becoming more widely adopted.