The abbreviation is based on the principle that, if the writer does not invest the time to convey their message concisely, the reader is justified not investing the time to read it. Alternately, it might mean that there is insufficient material of value or interest to justify the time required to read it.
On reddit, tldr is the subreddit serving as the site's daily recap. Long posts on reddit are also frequently followed or preceded by a summary, consisting of a sentence or brief paragraph, that is prefixed by the phrase "TL;DR", and the abbreviation is sometimes used as a noun denoting such a summary, as in "Please include a TL;DR along with your post".
- "Oxford Dictionaries Online quarterly update: new words added to oxforddictionaries.com today". OxfordWords blog. Oxford, UK: Oxford University Press. 28 August 2013. Retrieved 2014-12-04.
TL;DR, abbrev.: ‘too long didn’t read’: used as a dismissive response to a lengthy online post, or to introduce a summary of a lengthy post.
- "Too long; didn't read (TLDR or TL;DR)". reddit.
- Caldwell, Patrick (August 14, 2012). "Too Long, Didn't Read My Rights". The American Prospect. Retrieved 2014-12-04.
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