I guess now I can rewrite the commenting app again, this time to support OpenID and remove the captcha for those people, who are logged in. My implementation probably won't really use Simon's apart from being an inspiration, though, since I would like to really bind a username to an OpenID in order to make name-binding possible in comments. Now I just need the time for the whole project again. Perhaps this Saturday I will have a chance. Or Friday afternoon ;-)
As with many other Django related projects, also this one can be found on Google Code... Sourceforge is really starting to die, isn't it?