Check this out if you haven’t already: http://www.likebutton.me
It aggregates your Facebook network’s activity on one page. The custom search piece is particularly cool: scroll to the bottom, type in the URL of a site you’re interested in (your org’s, for example), and it will tell show you activity related to it on Facebook.
Here’s Autism Speaks’: [edited 4/28/10 'cos the link stopped working]
Very, very cool.