Research shows that most Facebook users are on mobile, and engagement declines dramatically with longer posts. A rule of thumb, you should aim to write posts that are around ________.

The correct answer is 50-60 characters. Research indicates that shorter posts generally perform better on Facebook, especially given the prevalence of mobile browsing. Posts in the 50-60 character range are concise, easy to read quickly on small screens, and tend to have higher engagement rates. While 140 and 280 characters are relevant to platforms like Twitter, they are often too long for optimal engagement on Facebook, where users scroll quickly. 480 characters is significantly too long and would likely see very low engagement.