Time was that if you wanted to check a politician's statements during a debate you had to wait until after the debate or until the following day.
Now, you can track the truthiness of their statements in something close to real time.
The Pulitzer Prize-winning website Politifact will evaluate what Joe Biden and Paul Ryan say tonight on their website here.
You can also follow Politifact via Twitter here.
You can watch the debate online via Aol.