Nounc'd is a dead simple way to integrate a hosted blog into your website. It automatically replicates your website's style and layout for seamless integration, without any custom theming. You can setup a blog in 2 minutes by providing your website URL and the ID of a HTML container. The service instantly sets up a new feature-rich blog with an identical theme and navigation as your website. You can include the blog link on your main website's navigation seamlessly.
To learn more about Nounc'd, watch their pitch at AZ Disruptors Pitch Day: