Traditional survey systems on the web claim that your response is anonymous, but in reality, they keep a database that maintains an explicit link between you and your response. They need this to make sure you only respond ONCE. You must trust them to maintain your anonymity, you must trust that they never get hacked.
As demonstrated by recent attacks (e.g., Sony), this is a DANGEROUS principle.
The ANONIZE system is based on a new cryptographic technology that ensures only survey targets can respond, and only once, while unconditionally guaranteeing anonymity: even if our servers are fully compromised, and all data is leaked, a link between users and their responses cannot be found.
See the webpage for links to peer-reviewed academic papers which describe the system in more depth.