http://marcusson.no-ip.com/mrtg/ - Some graphs over CPU usage, RAM usage, network activity, latencies to other hosts etc.
http://blinkenshell.org/uptime.txt - Uptime statistics, updated once per day. Shows top 3 since summer 2007.
http://titan.blinkenshell.org/ - Some status info, logged in users, list of all users and webpages etc.
http://signup.blinkenshell.org/ - List of all users in the signup process and their process.
http://blinkenbot.blinkenshell.org/ - Statistics from the main [:Info/IRC:IRC] channel.