Let's be real, this was a complete joke, as is ALOT of these types of contests. No way INS came back and won without cheating and I am sure they go many of them to use multiple email addressess and confirmations to do this.
That is why many of the projects like this a complete bullshit and should be verified with sending a text message from a mobile phone or something other way. It is more of a pain in he ass to get mobile numbers than it is to make different hotmail accounts