The DAO is an investment vehicle governed by a program, directed by investors' votes, to seek out and fund proposals. Implemented as a smart contract on the Ethereum blockchain.
https://daostats.github.io/index.html
This is the top page of all content related to "The DAO" (http://www.daohub.org)
https://blog.ethereum.org/2014/05/06/daos-dacs-das-and-more-an-incomplete-terminology-guide/
https://github.com/slockit/DAO
https://blog.ethereum.org/2014/08/21/introduction-futarchy/
https://dappsforbeginners.wordpress.com/