SAN FRANCISCO (Business 2.0 Magazine) - In its hometown of Mountain View, Google is preparing to launch the first of many planned free, citywide Wi-Fi networks that may one day blanket the nation. But the search engine is running into some technical glitches. A city official says that the network may need more access points -- those are radios that broadcast an Internet-access signal -- to provide the expected coverage, and the launch of the network could be delayed until July. That's a big problem: Having to deploy more hardware could change the economics behind Google's (Research) free Wi-Fi plans. The company is counting on increased Web browsing and searching by Wi-Fi users to generate enough advertising to subsidize the cost of all that hardware.