Small thing: avatar images don't have alt description. This can be easily fixed (I am pretty sure for the whole module) in line 247-251 of the advanced_blog.module file by adding alt="avatar" to line 251 like below:

      if ($advanced_blog_img) {
        $data->avatar = '<img src="' . $advanced_blog_img . '" '
                        . ($advanced_blog_avatar_width <> 0 ? ' width="' . $advanced_blog_avatar_width .'"' : '')
                        . ($advanced_blog_avatar_height <> 0 ? ' height="' . $advanced_blog_avatar_height . '"' : '')
                        . ' alt="avatar" />';

If I knew how to submit a patch, I would, but it occurs to me one might want to make it something like "avatar of $user_name" or whatever the variable for the blog title is or the user or whatever.