Comment by camgunz

> Only if your users are all located quite close to each other, or (sadly very common) you only care about making it fast for US users and screw everyone else.

Very true, mostly because it's pricey to do so--or more specifically, putting a server in DCA is $.005/user, putting a server in JNB is like $.50/user sooooo....

Sometimes this is a "so what", other times it has huge implications for app architecture.