A growing number of cities plan to offer wireless Internet access as a municipal service, but as those plans spread, <A HREF="http://news.yahoo.com/s/ibd/200552tech">a backlash appears to be forming.</A> More than 50 U.S. cities have set up or plan to install wireless broadband networks, Minneapolis is the latest to join the list. Some state lawmakers look to ban cities from going into the wireless business, critics say city wireless networks waste tax money. The goal of city networks--low-cost broadband Internet access for all--is noble, but business, not cities, should meet that goal, they say.