Paddy Power offering markets on video games tournaments
paddypower.com
paddypower.com
In my opinion it's pretty interesting that such a huge gambling company (300 shops across Great Britain and massive online site) has taken an interest in competitive gaming (esports) and is actually treating it as a real sport.
In case anyone's interested, that event is the Electronic Sports World Cup, one of two major annual world cup styled events (the other is World Cyber Games, by a different organisation) - and is offering over $200,000 in cash prizes to gamers this year. http://www.eswc.com/