Is CI able to handle a multi-user blog?

[eluser]Rick Jolly[/eluser]
To associate a particular blog with a particular user, you could use a "user_id" foreign key in the "blog" database table that links to a user in the "blog_users" table.

I'm totally unqualified to answer your question because I haven't used WP. I think you'd miss a lot of features if you built your own blog application. I know Derek Allard moved from WP, to a custom CI blog, and finally settled on Expression Engine. You'd probably be interested in his thoughts.

BTW - Expression Engine 1.6 has just been released. Maybe a great time to check it out.