What is the difference between Cloud, Grid and Cluster with examples
What is the difference between Cloud, Cluster and Grid? Plese give some examples of each as 

The definition of cloud is very broad. As answered in the another [question][1], can I call Dropbox, Gmail, Facebook, Youtube, Rapidshare etc. a Cloud?

What are the examples of Cluster and Grid as well.



  [1]: http://stackoverflow.com/questions/1067987/what-is-the-difference-between-cloud-computing-and-grid-computing
What is the difference between Cloud, Grid and Cluster with examples
===

What is the difference between Cloud, Cluster and Grid? Plese give some examples of each as 

The definition of cloud is very broad. As answered in the another [question][1], can I call Dropbox, Gmail, Facebook, Youtube, Rapidshare etc. a Cloud?

What are the examples of Cluster and Grid as well.



  [1]: http://stackoverflow.com/questions/1067987/what-is-the-difference-between-cloud-computing-and-grid-computing