What's old is new. Does anyone remember the forum signatures that would display the viewers IP address and location on a little wooden signpost held up by a troll-looking creature?
I was fascinated by this once I learned how it worked. At the time I was learning php and wrote a script that would draw graphics based on the requesting ip address and return as gif, then used that as my avatar on a few phpbbs. Learned a lot.
My friend would figure out the username, but he never did it maliciously, just for the challenge. Forums would show you which user was viewing a thread...
