Facebook's mission is to make the world a "more open and connected" place.
But the site's users can sometimes be a bit too open, posting pictures, opinions, videos, and 'jokes' via the social networking site that give employers pause--and employees the boot.
We've taken a look at 13 people who were fired over information they posted on Facebook. Was canning them excessive or did they earn it? Vote in the slideshow below, then check out 13 tweets that got people sacked.