What does PS stand for?

What does PS mean?

PS	Phantasy Star Community » Media
PS	Power Supply Governmental » Military
PS	Parti Socialiste Governmental » Politics
PS	Power Supply Governmental » NASA
PS	Paint Shop Miscellaneous » Funnies
PS	Progressive Scan Computing » Hardware
PS	Per Second Academic & Science » Libraries
PS	Public Service Community » Educational
PS	Personalized Setting Computing » Software
PS	PolyStyrene Miscellaneous » Plastics
PS	Primary School Community » Schools
PS	Public School Community » Educational
PS	Professional Services Governmental » US Government
PS	Print Server Computing » Networking
PS	Partido Socialista International » Spanish
PS	Point Source Business » Accounting
PS	Power Solution Computing » General
PS	Pro Series Miscellaneous » Clothes
PS	Pre School Community » Educational
PS	Post Scriptum International » Latin
PS	Pre Set Computing » General
PS	Post Script Governmental » Military
PS	Pulse Shape Academic & Science » Electronics
PS	Power Save Computing » General
PS	Personnel Services Governmental » Military