GoolgeBlogscoped has an article about the Google Intranet
What the Google Intranet Looks Like
What do around 16,000 Google employees stare at in the morning when they’ve arrived at the office? They might be looking at Moma, the name for the Google intranet. The meaning of the name of “Moma” is a mystery even to some of the employees working on it, we heard, but Moma’s mission is prominently displayed on its footer: “Organize Google’s information and make it accessible and useful to Googlers.”
The article is not all that exciting a read. I don't know really anything about GoolgeBlogscoped and based on the obsessive fascinated tone of the entry I don't think I'll be reading them much.