No one wants to read a social media status that feels like a book, and according to Buffer, there might be "ideal" lengths for getting the most responses.
For Twitter, they found that Twitter's best practices were right on the money: 100 characters is the "engagement sweet spot." Facebook, strangely, was even shorter: 40 character posts had 86% higher engagement.
That's a lot of buzzwords and data for businesses trying to promote themselves—and who knows, perhaps there's some third variable at work here—but it makes sense. Shorter posts are easier to read in a shorter amount of time, and thus might get more views, likes, retweets, and so on. So if you're looking to get more "action" on Facebook or Twitter, even among your friends, it might be worth taking into consideration. With a grain of salt, of course.
The Ideal Length of Everything Online, Backed by Research | Buffer Blog