I'm a little confused as to what is being targeted here. The title says "volunteers for nonprofits", which suggests a platform aimed at recruiting people to donate their labor to charitable causes (e.g. recruiting volunteer workers for the Red Cross or Habitat for Humanity or soup kitchens). But the article is entirely about increasing voter turnout in political campaigns, by having people canvass their like-minded acquaintances, thereby increasing their interest in elections. That seems quite a bit different as a use-case, though I could imagine similar technology aiming at both problems.

edit: Thanks for the reply; looks like TechCrunch just chose to take an election-year angle on the story.