President Obama made what is probably a first today in asking America to use a Twitter hashtag the administration has come up with to taunt Congress into an agreement on the fiscal cliff.

Standing with “15 middle-class Americans behind him” according to Washington Post, Obama urged America to make noise and badger Congress about the fiscal cliff. “You can tweet it using the hashtag #my2k,” which sounds like a Y2K reference but is actually a nod to the $2,000 most middle class families would apparently face if a budget agreement isn’t reached by 12/31.

“Call your members of Congress, write them an email, post it on their Facebook walls,” he continued. “When the American people speak loudly enough, lo and behold Congress listens. Today I’m asking Congress to listen to the people who send us here to serve. I’m asking Americans all across the country to make your voices heard…. It’s too important for Washington to screw this up.”

Obama is also embarking on a campaign this week to urge Americans to pressure Congress into a deal. As you probably know, if no deal is made taxes will go up on everyone and $600 billion in spending cuts will kick in automatically in January, which could throw the economy into recession next year. Obama wants to raise taxes on income over $250,000 and keep them low below that threshold.

For their part, Republicans are launching their own PR tour about why taxes on the rich should stay low. It’s the same argument that Romney made all year, and they did just lose an election on it. But for some actual evidence of what happens when you raise taxes on the rich, check out this great NY Times article on what’s happening in California now that they’ve voted to do it. (Hint: good things happen.)