I was at a graduate careers fair recently where they had a very useful stand for students to come for advice on their social media. Advice on social media? What kind of advice? We all know how to use Facebook, Twitter, StumbleUpon and so on. It was advice on how to optimise these various networking websites so that you don't get caught out when job applying.

In the modern world it should be taken for granted that an employer will Google your name when reviewing an application for a graduate job. If you have an uncommon name this could provide them with a link straight to your Facebook profile otherwise they can log on and search within the site. So it really is a good idea to have your security settings thoroughly sorted out, if they aren't already.

It's a good idea to take a bit of time and sift through the privacy settings on Facebook making them as secure as you are comfortable with. Although in the past there has been some controversy over their user friendliness.

Something that many people don't know about Facebook is that you can remove yourself from being listed in the search function altogether if you wish. To do this you simply need to go you privacy settings and click 'Connecting on Facebook', at the top of that page you should see an option called 'Search for you on Facebook'. This can be set to 'Everyone' (default), 'Friends of friends and networks', 'Friends and networks', 'Friends of friends' or 'Friends only'. If you wish to effectively be removed from the Facebook search function make this 'Friends only'.

Now people you don't know won't be able to look you up on the site, including on search engines. However, remember that you won't be able to tell people "look me up on Facebook" any more.

Twitter, by its nature, is a much more public platform than Facebook. The large majority have their profile on the default setting of public which means everything you have on there including your tweets are just as visible. Making this private is quite an easy affair however some would understandably that making your tweets private kind of defeats the point of the microblogging site. If you want to keep it public just make sure that your profile and tweets are not too unsavoury as to put potential employers off.