I was in a Home Depot the other day and notice that my 3G fone was picking up wi-fi hotspots thru out.  I suspect they are for contractors to connect with customers or their company, but the hotspots were unsecure. 

Wonder if HD realizes that they might be creating a future boondock site for RVs? 

It's fun to cruise through a big shopping center and watch all the free WiFi spots pop up. Unfortunately, many cities have instituted restrictions on overnight parking in parking lots. Some cities also have strict loitering laws aimed at home center type stores due to the complaints regarding day laborers hanging around in large numbers. The world is becoming more and more restricted due to the few that ruin it for the masses.

Terry: Definitely secure your MiFi or someone will use your service and blow out your 5GB per month. You even have to worry about others using it that you give the key. A friend gave his neighbor the key and a week later there was a big spike in usage so he turned the wifi off. The neighbor came and asked what was wrong since the neighbor's grandson was visiting and complained when his online game stopped working. On using random wifi hotspots you better have your virus and firewall very up to date since who knows how well maintained the systems are you are connecting to. I would not do anything important while hooked up to a wifi hotspot I know nothing about.