The company has 'plugged into' the international market. [=the company has become connected to the international market; the company has begun to do business in the international market]
His friends are 'plugged into' the city's music scene. [=his friends are actively involved in the city's music scene]
The computer program will take data from these sources and automatically 'plug' it 'into' the equation.
(..) I gotta hit the head. Ever been on a plane and find yourself looking down at the armrest next to you, looking at the little plug where the ashtray used to go? I look at that and I say, "What the hell happened to this country?" Nanny state. I see a kid with (..)2013 TvShow: Breaking Bad Title: Confessions Season: 5 Episode 11