Making sure that we have a professional type of web presence is very important in being hired and making ourselves seem presentable in the real world. Here is a LINK to a website I created myself, making myself a professional web presence. In being hired this is such an important part of the process.
This does not mean do not have a facebook, but it does mean be careful of what you have out there on the internet. Having a facebook account does not necessairily condemn you, but it is of vital importance to also have a professional web presence that tells prospective employers about what it is you do and what it is that you would like to do with your career. It also creates a sense of professionalism that is highly valued in employees.