Possible Winner: Bitcoin Sports Betting Affiliates
FIFA World Cup 2014 was the first major international sporting event to take place during the Bitcoin era and Bitcoin sports betting affiliates did everything they could to cash in on it.
Embracing the renegade spirit of digital currencies, Bitcoin sportsbooks and bettors rolled out a ton of novel betting tournaments and new wagering formats for the big event.
BitKup, for example, used a public wallet to create a World Cup betting pool that offered completely transparent transactions and turned out to be quite popular.
Other Bitcoin punters used peer-to-peer betting sites to bypass sportsbooks entirely by using BTC escrow accounts to keep things fair.
http://www.coindesk.com/bitcoin-betting-kicks-brazil-world-cup/