I remember when I was in school, the illustrations our instructor would use for the internet (networking class), would be a cloud. I always associated with "Internet". To me, having something interconnected and easily accessible is "Cloud". While I'm sure other people could defend their definitions, I'm pretty sure this was before the term was popular, so I'm going to continue my conceptualization of it in this way.
However, when it comes to cloud hosting, is VPS included? I only use one node right now, but if I balance my load across to servers, would it then be cloud?