An unofficial minecraft convention, ‘MineOrama’ has disappeared with $500,000 a week ago, and no refunds. The twitter page was taken over by a ‘16 year old’ and has since posted nothing but garbage.
Kotaku article;
PC Gamer article;
http://www.pcgamer.com/2014/07/09/unofficial-minecraft-convention-canceled-at-last-minute-organizers-accused-of-fraud/
Twitter account (Probably suspended soon)
https://twitter.com/mineorama