Like it or not, some employers and recruiters will search for you on social networking websites. You are in control of your online identity and a prudent candidate would take this as seriously as their CV and covering letter. A simple solution would be to restrict public access to your profiles, but a page on a social networking site that shows you are socially active and fun could increase your employment credentials. Just try to avoid anything controversial like an outlandish political view that seemed funny at the time or over use of swearing or any other inappropriate material.
If you haven't already, it may be a good idea to set up a LinkedIn profile. This is an online networking site for professionals. On this site an employer will be able to see the contacts you have made during any previous work experience you have had. Also, if you have an account with LinkedIn it’s often the first result if someone Googles your name, making it easy for them to view your professional history.