We've now gotten all augur contracts on the live Ethereum testnet. All function calls have been tested (albeit naively, with more testing ongoing) and confirmed working. Our code is now open source, lots of documentation & a UI will be coming soon.
Augur allows you to create any sort of predictive marketplace without counterparty risk. It utilizes Ethereum for its smart contracts and Bitcoin as a currency
https://github.com/AugurProject/Augur-core