It can be difficult sometimes to find real, honest-to-goodness facts on the Internet.* Here are a couple of places I like:
First and foremost: Politifact.com, and Factcheck.org. These two important sources are decidedly non-partisan, taking on statements from all parts of the political spectrum. They usually agree, but not always, showing that no matter how thorough you are, factuality is a matter of analysis, and so it is important to read the full report on any statement.
For the more outlandish claims that often circulate in email and on Facebook: snopes.com, specifically the political pages. The most recent issue I used Snopes for was the "Congressional Reform Act of 2011."
For number crunching and various other analysis Nate Silver's Five-thirty-eight blog at the New York Times is usually trustworthy.
Are there any places you go to check facts?
*There is a reason teachers tell their students they can't use Wikipedia for research papers.