Each time, I visit my hometown, Madison, Ind., I appreciate the openness of WiFi networks. It's the high-tech version of the farm community in which people don't lock their doors. Hopefully, nobody there reads this article. You can get on the public library's network simply by agreeing not to do the usual array of nasty things online. That's funny because the staff vigorously patrols the desktop units to keep nonmembers off those.