[eluser]Kemik[/eluser]
From what I've seen I think it goes something along the lines of this example...
All user events such as register, log in, log out, forgotten password, profile, edit profile goes in controller you could call "user".
Then all the news events such as display news, add comments, view comments would go in a controller called "news".
So break down your website in to sections or "modules" I suppose you could say.
Anyone else please feel free to tell me if I got it wrong too. I'm still learning