For those having nostalgic feelings for the 1970's (or in my case, the 1980's), here's a site about Plato called PlatoPeople.

Some describe PLATO as a predecessor of the internet, others as a large time sharing system. However, either way, the more you know about the history of some of the technologies we take for granted today.

I used the system at the University of Illinois at Urbana- Champaign when I was there getting my undergraduate degree and definitely have fond memories of late nights spent staring off into the orange haze at 3 am.