Votergasm
Bringing people together to vote and have sex.

With three levels of pledge commitment:

Citizen: I pledge to withhold sex from non-voters for the week following the election.
Patriot: I pledge to have sex with a voter on election night and withhold sex from non-voters for the week following the election.
American Hero: I pledge to have sex with a voter on election night and withhold sex from non-voters for the next four years.

Not quite in the spirit of the site, but it's awfully easy to be an American Hero if you're married.