Can your facebook profile jeopardize your career prospects? The answer is a resounding YES. Ill-advised, public content on facebook, Twitter, blogs, etc. is easy to find these days...don't allow your social media presence to sink your job/internship search!
One helpful resource that may assist you in protecting your privacy online is Online Reputation Management, a free, educational resource that provides a wealth of information on the steps you can take to ensure that prospective employers can't "dig up dirt" through your social media channels.