Don't be fooled by misinformation on the web.
Some satire is painfully close to the truth, and launching a satire site is easier than ever. The Verytas extension helps you know if something you see on Facebook or Twitter is actual news or just depressingly plausible satire by checking the links in your timeline against a continually evolving list of satire websites.
The extension is completely private, running entirely on your browser, and doesn't send or store any data.