While today's term isn't often seen on social media, it sometimes is. TL;DR is short hand for Too long; didn't read. It's often used to offer a summary of a much longer post that they realize most people won't read or just to offer a summary for those who didn't read it so they can get a gist of it.
TL;DR is often seen on forum posts either before the post begins or at the very end for someone who scrolled past the block of text to find the summary so they could respond to the post.
I've seen TL;DR on Facebook and Tumblr posts. TL;DR doesn't really apply to Twitter because it's impossible to get too long on Twitter. You might see the phrase occasionally on Blog posts when people want to offer a summary.
Wednesday Words are a series of definitions released on Wednesday each week regarding a word found specific to Facebook's social media platform, or may be a generic word dealing with social media. These definitions are to help provide you with a better understanding of common and uncommon terms associated with Facebook and social media. You can find all the Wednesday Words by clicking on the Wednesday Words tag below.