It's no secret that campaigns want to know who you know. President Obama's campaign, for example, developed "Targeted Sharing" back in 2012, a tactic which encouraged users who opted in to share specific content with particular groups of friends in order to get them to register to vote, donate to the campaign, or watch a persuasive video.
"People don't trust campaigns. They don't even trust media organizations," Teddy Goff, the Obama campaign's digital director, told Time in 2012. "Who do they trust? Their friends."