(Bit old i know, sorry)
Good article, more and more users need to understand the dangers behind using any free service especially one that you dont have any control over like a wifi. With some simple, easily avaiable tools - anyone can "watch" the entire network and steal the data going through, which could be your facebook, twitter or banking details.
There is another option instead of VPN - as these can be slow if the server is far away or your connection is not a strong one. You could use a SSH or SSL software to encrypt your data - ive found one company that offers both and I use the SSH (they call it Net Gaurd - not sure if im allowed to post the URL? http://www.securewebpoint.com/products/netguard/)
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