Twitter using Rails to grow to the point where Rails became the problem was actually Rails's selling point. If you ever grow to the point where Rails is your pr

Twitter using Rails to grow to the point where Rails became the problem was actually Rails's selling point. If you ever grow to the point where Rails is your problem, then you have money to solve that problem. But if Twitter hasn't used Rails, they might not event get to the point where their product is out the door.