So, this post basically says that a hotel injects "white boxes" that could contain ads in a website when you use their free WiFi. If one uses free WiFi, whethe

So, this post basically says that a hotel injects "white boxes" that could contain ads in a website when you use their free WiFi. If one uses free WiFi, whether it is the hotel's or a Starbucks' access point, he/she should be aware that the access point cannot be trusted anyways and not only that, but also that every other user of the same WiFi might read all unencrypted traffic (which might be the more serious threat). I guess in 2012 everyone should have a certain awareness around these things and the simple solution is to visit only HTTPS-sites from a free WiFi access point (and don't ignore the browser's SSL-warnings, if they happen to occur) or use your own (encrypted) VPN.