Yeah, the author is mistaken. Services haven't just always been in OS X, they were even in Nextstep. Main difference in Snow Leopard is that they're also in a r

Yeah, the author is mistaken. Services haven't just always been in OS X, they were even in Nextstep. Main difference in Snow Leopard is that they're also in a right-click menu now, instead of in the menu bar at the top.