Covert Channel: ASCII Art Over ICMP
An anonymous reader writes "Have you ever had a particularly lossy Cisco ping, which you were sure was trying to tell you something? I mean, really *tell* you something. Echoart allows you to return a simple ascii art image in response to a Cisco-style ping."
...mostly useless, yet very cool -- much like /. itself.
dmiessler.com -- grep understanding knowledge
There we go. Set this up to query, instead of a text file, slashdot's rss feed. With every ping response, it returns the latest news headlines.