Keep it positive :)

Using data from more than one billion anonymous status updates among more than 100 million Facebook users in the 100 most populous cities in the United States, the study found that positive posts beget positive posts, while negative posts beget negative ones.

According to the research, positive Facebook posts are more influential than negative ones, spreading the positivity among others. Each additional negative post yields 1.29 more negative posts among friends, while each additional positive Facebook post yields an additional 1.75 positive posts among friends, the study deduced.