connecting blogs

How do i create functionality that allows multiple installations of wordpress to post to each other’s blog. what I’m saying is that if I had 2 blogs set up, but wanted to pull certain content automatically from one blog, how can I set up that feature? For instance if blog1.com had a category set up called clinton, and whenever blog2.com adds a new post, then blog1.com’s clinton category would be updated with the post from blog2.com. IS that possible?