I donot much about cloud computing. But I understand that this dispenses with hard disk and entire data is in cyber space. I keep many of my files in 'Google Docs'. Also Google has given a facility that your history and bookmarks are saved and can be seen on other computer. This is Google +. I am using this and so the book marks saved in office are also available on my home computer.
Thanks, that is one good way of using cyberspace and find it on any computer whenever you need with out being on your own computer. You can very well use your gmail account with so much space available there. I have found out some sites which you can use for keeping your data safe. The time is round the corner when no one shall give importance to space available in his hard disc. Every thing will be available on such sites without having a fear of losing it. Yes a backup of the same would be still wise.