NEW YORK (AdAge.com) -- Although they get all the press, phones aren't actually the only devices that make up our rapidly expanding world of mobile communications. Laptops and portable game consoles are also being widely used by on-the-go consumers. And companies like Yahoo and Google are paying close attention to that. Both sponsored expansive free Wifi services for the holidays. Yahoo's blanketed Times Square, while Google's took to the airports and skies beyond.