I try to find an embarrassingly parallel solution to most problems I encounter. Not only because such solutions scale, but because they often produce a simpler, more robust architecture which helps you to avoid future issues. It's great for avoiding single points of failure and performance chokepoints. Also, there is usually little to no overhead for choosing a parallelizable solution (besides a little bit of additional up-front thinking.)

To people who say "You don't need scalability" I say "You also don't need unscalability..."