I must say it: "I'm disappointed with the blog software out there for Joomla". Since several months there is IdoBlog, but well how to say it - it doesn't use !jocomment as comment system, neither it use CB for the user profiles. Since bloging is important for a lot of people (for me too :)) I decided to start a project on joomlacode http://joomlacode.org/gf/project/jolog/ and write myself the blog I want to exist for Joomla.
Well, that is a difficult thing to do all alone :)You know that joomla means: "all together", that is why I think that we should develop this blog also all together and release it free of charge for the community.
What I have developed so far? You can download the files from svn http://joomlacode.org/gf/project/jolog/scmsvn/ also run the jolog.sql file to create the necessary tables.
There is some kind of frontend and backend :) I get the results from the database and show them in a list view, you can click on them to see them in single view. (You are going to need the CB for this version, since there is no option so far to work without it.
Good ajax voting should be implemented and a very important feature - extending the autorizate class in joomla so we can provide our own moderator groups for the blog.
If you want to join the project you can contact me on this web site or just click "join the project" on http://joomlacode.org/gf/project/jolog
For more info you can use this forum here:
http://compojoom.com/index.php/forum.html?func=showcat&catid=16
Please keep in mind - this is only for developers! There is no end user version so far.