How to make blog network like SmashingMagazine

I noticed SmashingMagazine released a Smashing Network feature, which includes other website's posts. This is interesting, I am wondering how do they do that?

http://w开发者_如何学JAVAww.smashingmagazine.com/network-posts/

B.T.W. I am using Wordpress

It's just RSS: FeedWordPress | simple and flexible Atom/RSS syndication for WordPress or WordPress › SimplePie Plugin for WordPress « WordPress Plugins (or other plugins) and their own CSS, etc., for presentation.