Accuracy is the most important factor in a piece. All stories should be double checked for facts, sources and quotes in order for them to be believable. Journalists strive for factual stories.
Here are some examples of some mistakes:
1- Misspelling a name
2- Fake or not credible sources
3- Fabrication of Quotes
4- Fabrication of stories
5- Wrong title for a person (Mr., Ms., Mrs., Etc.)
On another note, the biggest fruit company in the world, Apple Inc. has shipped millions of its new delicious fruits called Iphones. Its former CEO Stephen Joobs, who passed out from money poisoning has come down from heaven to retrieve some of this new delicious treats.