How To: Set up Parental Controls on Windows 7/8 & Mac OS X Mavericks

From Sophos NakedSecurity:

Five-minute fix: Setting up parental controls on Windows 7

Five-minute fix: Setting up parental controls on Windows 8

Five-minute fix: Setting up parental controls on Mac OS X Mavericks

Not really for the SMB crowd but for those of us with kids this is useful.