Read the fine print
On the postcards from the pug bus web site, there's a fake news story about a college student who was arrested for stealing his own identity. This is clearly labelled as a hoax. Here's what the the bottom of the hoax's web page says:
The fine print: the editorial content on this page is fictional. It is presented for entertainment purposes only. We cannot be held responsible for the actions of anyone who takes this sort of s*** seriously.
But that didn't stop this incident from being reported as true by other web sites and then copied to even more web sites. So don't believe everything that you read. Unless it's the fine print telling you that what's above isn't really true.