How to point a home page in a multisite to a different article

Hi, I want to run a multisite environment, where I want in the home site to display articles from my different sites (at present two) in different categories together.

I want to run in more than one language like that in Wikipedia and say int he home page I want to display links and blurbs of articles from both the sites at one place and when users click the link then they go to the respetive pages.

How can this be done? Is there any plugin or something that will help?