There’s a great article at the US News and World Report website titled Can Facebook Posts Lead to College Rejections? The bottom line is what you would expect:  if you post something reckless, you get a reckless reputation.  So use your good sense, assuming you have any.  And for a guideline, check out the article.

The lesson here, however, applies to all areas of life – not just college admissions.  Consider the advice as applying to all aspects of your life, professional or otherwise.