This looks an exciting development by a group of well known code Gurus, I suspect they don't like the NSA watching their activities much.
http://scatterchat.com/index.htmlScatterChat is a HACKTIVIST WEAPON designed to allow non-technical human rights activists and political dissidents to communicate securely and anonymously while operating in hostile territory. It is also useful in corporate settings, or in other situations where privacy is desired.
It is a secure instant messaging client (based upon the Gaim software) that provides end-to-end encryption, integrated onion-routing with Tor, secure file transfers, and easy-to-read documentation.
ScatterChat uses 2048-bit ElGamal and 1024-bit DSA for encryption setup and authentication. For each new conversation, ScatterChat generates a new 256-bit AES message key, a 256-bit SHA-1 HMAC key, a 256-bit nonce, and a 256-bit AES file transfer key. It is immune to replay attacks, supports Perfect Forward Secrecy, and features limited message deniability properties
Its security features include resiliency against partial compromise through perfect forward secrecy, immunity from replay attacks, and limited resistance to traffic analysis... all reinforced through a pro-actively secure design.
I think this sounds useful and helpful for privacy in the current time of over broad powers governments are assuming, I may well ditch my existing client and use this instead