S - Source
Where did it come from? Who wrote it, published it, posted it?
M - Motivation
What are they trying to sell you? Who has what to gain (or lose)?
Where'd they get their data? Says who?
L - Logic
Can you follow their train of thought? Do they commit logical fallacies?
L- Left Out
What aren't they telling you?
Snopes claims to be "the definitive Internet reference source for urban legends, folklore, myths, rumors, and misinformation."
PolitiFact is a fact-checking website that rates the accuracy of claims by elected officials and others who speak up in American politics. PolitiFact is run by editors and reporters from The Tampa Bay Times, an independent newspaper in Florida... (from their web site)
We are a nonpartisan, nonprofit “consumer advocate” for voters that aims to reduce the level of deception and confusion in U.S. politics. We monitor the factual accuracy of what is said by major U.S. political players in the form of TV ads, debates, speeches, interviews and news releases. FactCheck.org is a project of the Annenberg Public Policy Center of the University of Pennsylvania. (from their web site)
The purpose of this website, and an accompanying column in the Sunday print edition of The Washington Post, is to “truth squad” the statements of political figures regarding issues of great importance, be they national, international or local.
AllSides provides multiple perspectives on a single issue.
PunditFact is a project of The Tampa Bay Times and the Poynter Institute, dedicated to checking the accuracy of claims by pundits, columnists, bloggers, political analysts, the hosts and guests of talk shows, and other members of the media. (from their web site)
Nodes of Science is a collaborative science communication and outreach network promoting skeptical inquiry and scientific reasoning throughout social media. (from their web site
Open Secrets is a nonpartisan, independent and nonprofit, run by the Center for Responsive Politics, which is the nation’s premier research group tracking money in U.S. politics and its effect on elections and public policy. Open Secrets are by far the best source for discovering how much and where candidates get their money. They also track lobbying groups and whom they are funding.
Headquartered at the Annenberg Public Policy Center of the University of Pennsylvania, FlackCheck.org is the political literacy companion site to the award-winning FactCheck.org. The site provides resources designed to help viewers recognize flaws in arguments in general and political ads in particular.