<p>I don't have pictures of myself drinking or anything, but some of the conversations I've had through wall posts in the past would be embarrassing if colleges saw them. What do they look at?</p>
<p>most colleges don't have the time to look at every single applicant's profile looking for bad stuff... they won't go searching for bad things you've said/done, but if they receive information about such things then they may go looking.
they know that how you talk or act on facebook is not how you are in person (most of the time ;) ).</p>
<p>to be safe set your account to private and make sure your profile picture is nothing bad.</p>