title: What is a servicebus?
body: <p>I've read about nservicebus countless times on the net, but still don't get what a service bus is.</p>
  
  <p>All I think is it is a way for very disparate systems to talk to each other? In which case, I don't see why it is any better than WCF?</p>
  
  <p>I've seen the thread on here about what a service bus is but it still hasn't clicked.</p>
  
  <p>Thanks</p>