On Trendio you can bet on any word of which you think it will be more quoted in the media in the future (from the world of politics, sports, events, stars and so on).
The words are rated according to the number of times they appear in 3000 anglophone media web sites from around the world. You can buy the words you believe will be gainers in the next future and sell others. The service is free,but you have to register and you get $10,000 play money. Recent top gainers were the words "Cuba", "Michael Jackson", "Bill Gates","national debt", and "ADHD".