It was interesting to watch today how Google is solving scalability problems:
Problem 1: Conference registration lines are too long.
Google's solution: Let anyone in. No badges are required before 2 p.m.
Problem 2: Too many people who want to attend the keynote speech by Vic Gundotra
Google's solution: Still let anyone in. People can sit anywhere on the floor
Lesson: relax rules if they stay on the way of scalability