While we're on the topic of more than one server, can anyone tell me when it's usually time to utilize more than one server? I am a loooong way off from needing that type of solution, but I've always wondered at what point do you typically need to think about adding an additional server? Would it be several hundred concurrent users or would it be more like several thousand concurrents? And how exactly can you use two servers at once? You can't split up your forum between two different servers can you?