Network Latest Posts by is a WordPress plugin allows you to get the latest posts from the blogs in your network and display them in your site using shortcodes or a widget.
Display the number of posts by time frame chosen by the user (30 days by default)
Display titles only or titles and excerpts
Insert html tags to wrap the content output
Use shortcodes to display the posts wherever you want
100% CSS friendly
For further details please visit: http://en.8elite.com/2012/02/27/network-latest-posts-wordpress-3-plugin/ [English]
Plugin works with WordPress 3 Network (multisites) and is based in the WPMU Recent Posts Widget by Angelo.