I think it's good advice for anyone's facebook that isn't set to private--rushees, pledges, actives...and even GDIs.
I'd even be careful with my profile set to "private" as well. Sometimes you can't trust your "friends" to leave what's on facebook--on facebook. Plus, it looks pretty hypocritical to be president or standards or something but have a facebook full of the "slut, ho, biatch" kind of stuff. What kind of a message does that send your friends or anyone else who looks up to you?