We have just setup the official Chanka message board at EmuTalk, where the authors baktery, unai and garrofi will respond to your questions when they have some spare time (they're busy so don't bug them! ) and where you can discuss this amazing emulator with other fans.
As you probably have noted, a very comprehensive compatibility list has been started so if you think you can contribute to it, feel free to do so. If you want to check out some screenshots of Chanka, point your browser in this direction.
Official Chanka message board