Hello,
CjBlog is not only good for a blog system of Joomla, but it's also a key component for CJ products because it can integrate all the products to a central view of activities.
I think the User Profile page is a very import part of these kind of activities, like User answers, User questions, User votes, User polls, etc.
This page can be a central view of Joomla users' activities in the site, just like Community Builder.
And also CjBlog could be able ACL the view of each activities thus bloggers can control who can view what part of his activities.

There's a great potential for CjBlog, thanks for your great work!