In 2001 when I was 14, I had no idea what scalability was or how anyone scaled websites. I ran a site with 20k users on a single sever with a single Pentium IV (1.4? Ghz) processor from a garage with no climate control and the fastest cable connection I could afford. At peak hours the processor finally succumbed to the load and I had to buy a second server. I was able to talk a local ISP into co-locating the servers in their rack (Climate control! Fiber!). When I realized that I could load balance with DNS and no load balancing software, I thought I was a genius. The king of scalability.<p>Needless to say, I was not the king. The engineers at Facebook are king.