Cloning, as it applies to fix wordpress malware fix, is the act of making an exact replica of your WordPress install. What is great is that you can do it in only a couple clicks. There are a number of reasons why you may want to do this. Here are just a few.
The one I personally recommend, and the approach, is to use one of the password generation and storage plugins available on your browser. I think after a trial period, you have to pay for it, although people like RoboForm. I use the free version of Lastpass, and I recommend it for those of you who use Internet Explorer or Firefox. That will generate passwords for you; then you use one master password to log in.
Before you can delete the default admin account, you need to create a user. To do this go to your WordPress Dashboard and click on User -> Create New User. Enter all the information you will need to enter.
It's time to sign up for a new Facebook accounts and use this person's name and identity to present as your buddy. After I get it all set up, I'll be emailing you posing as your friend and asking you to be friends with me on Facebook (or Twitter, or whichever social site).
Do your homework and some hunting, but if you're pressed click for time and need to get this done once and for all, try the WordPress safety plugin that I use. It is a relief to know that my website (and business!) are secure.