Every now and then we need new words and phrases come into our lexicon, like the unfortunate "twerking", but here's another "tl;dr", short for "too long; didn't read". I'm guessing it started as an insult/excuse not to read a long document, blog post or email. Respond "tl;dr" and you've put the blame on the writer for being too loquacious to the tweet-friendly generation.
Now I see tl;dr used as a short synopsis sometimes by the author themselves, the new executive summary if the executive has six seconds to read. Maybe I should tl;dr my class lectures: "Finite Automata: Easy to analyze but too weak to do much interesting".
Are we really moving to this brave new world of micro-attention spans? Is this just another reason that newspapers are dying and blogs are passé? When I write email should I keep it short and be misunderstood, make it long and have it not be read or add a tl;dr summary and get the worst of both worlds?