Scope of a CMS

[eluser]JanDoToDo[/eluser]
Ok, many thanks for that response it was useful, but one question:

You said "I use the default (root) controller to process all incoming requests" but if your uri(1) is "about" then it would load the "about" controller and not the default controller? How would you ensure it always goes to the default controller even if you supply the first uri segment? Secondly, does this mean that in actual fact you would have very few controllers? e.g. accounts(or users), admin, and default(for every page), and maybe one or two more depending what they were, + any modules?