How to Upgrade Your Old Two-Prong Electrical Sockets to Three-Prong Outlets
by Aisha Jordan from Lifehacker on (#5KG5T)

Homes built before the 1960s had different electrical regulations than we do now-including the fact that two-prong outlets were standard, rather than the average three-prong ones we typically see today. The third hole in our outlets basically helps protect against electrical surges and shock, and while two-pronged...