YD WPMU Bloglist Widget plugin activates a new sidebar widget that lets you display the list of all subsites of your main parent site using a single or multi-column layout format.
It displays the post count for each subsite and also creates a new PHP function that can used inside your theme templates for displaying an ordered list which can be designed as a block of information using CSS.
You can order the list by blog name, post count, blog creation date or last update, in ascending or descending order. You can exclude the blogs from list based on various criteria or individually simply by blog ID.