I don't know whether this has been asked before, but I was just wondering if it's alright to connect to an unsecured wifi connection? A lot of free wifi hotspots are appearing nowadays, and most of them, if not all of them are unsecured. How safe is it to use them? My cousin told me about one yesterday he was using on his iPhone 4, so, I figured it would be better to use the wifi as opposed to my data usage.