How can jobs look at your social media with privacy settings?

[freestyle5700]

The only other way would be through your friends. Facebook changes it's privacy settings so often and most recently they've changed that bar that was added on the right hand side that shows your friends commenting on other people's who are not your friends photos, statuses, etc. That's one way a potential employer may be able to see some of your profile information.
Best bet is to check often whether any new privacy settings have been rolled out and to not put any potentially damaging photos or status messages up. You won't have to worry if you don't have much to hide.