The Comodo Dragon browser is a new browser with advanced security options. Most of the security is based on SSL certificates, the browser has been made lightweight too. Many options are missing because 'they ain't tested yet'.
The Dragon browser is based on the Chromium version 3. So it doesn't support extensions. But Dragon doesn't miss only that, it also lacks the bookmark sync, automatic translation, and all the other Google features. And even the reporting feature, that was a major concern to Google Chrome users when that browser got released.
In an e-mail stated to cnet.com the makers said Comodo touted this lack of reporting as beneficial because it prevents attackers from finding vulnerabilities in the software error-compiling mechanism.
I checked the browser to and find out that every site with a log in function that doesn't got a certificated gets blocked. Although you can unblock it, a site as Facebook or Hyves should be trusted.
The makers said also that in March the browser will be upgraded to Chromium version 4. More features will be available then.