Sitting here in the convenient but glumly industrial Kansas City International Airport that trumpets its free wi-fi connections on billboards both in- and outside the terminal. One problem with the fabulous free wi-fi. In my first 10 minutes of trying to log on, I get this message: "There are too many users logged on. Please try again later." Tragedy of the commons, anyone? Why not make all of us business travelers pay to ration and signal for sufficient capacity?