tl;dr : Too long, didn't read.
"Did you read the fourth definition, it was quite witty!"
Stands for "too long; didn't read".
Along with the above-mentioned use of tl;dr by lazy jerks and trolls, the use of this term is a great way to cut down long-winded, nonsensical arguments made by insane conspiracy theorists who are probably wearing tin-foil hats while typing them.
Johnny: There's no way the moon landing happened in real life! For one thing, the shadows of Neil Armstrong and Buzz Aldrin in photographs are pointing at different angles. The pictures could only have been taken in a studio! And there aren't any stars in the lunar sky in the pictures, either. How could they have ... (etc.)
Too long, didn't read (tl;dr) spam.
An online posting which looks like a long, informative article, but is often filled with word salad, and contains links to an online store. Sometimes the "article" appears to be related to what they're selling, but other times it is completely unrelated. It's so long and nonsensical that most people probably won't try to read it, but some may click on the links out of curiosity.
Here's a small snippet of some actual tl;dr spam found on the web:
Organizations have the ability to purchase children whenever they do this back an investing time period, that may be dedicated straight up. In each and every groups, customers may even grumble lopsided investments which may elegance either company, prevent clients found in ganging upwards for any critically regular membership. People like to wear <link - "customized football jerseys"> very much. A specific person is all about called a free of charge specialist, that'll be autographed having a company throughout a first-come, first-serve base. On the other hand, whenever incorporating a sports athlete is going to put view company more than the area collection for that lineup, a customer circumstance to produce person happen their own lineup.
Short for "Too Long; Didn't Read"
Originally intended for when someone makes a point in an arguement/discussion and the intended target of the point cannot be bothered to read the lengthy comment. However, it has been overused and brutally raped of it's meaning due to people being incapable of responding with an intellectual/witty remark. Now most commonly means "Your arguement is so sound and accurate that I can find no flaw to point out. However I do not wish to look like an uneducated fool, and so I shall instead respond as if you are the ignorant one for posting an in depth comment of such length that it would imply too much effort to read." Ironically, a large number of people would be likely to comment TL;DR to this definition if given the opportunity, thereby showing that they fall into the category of people to whom this applies
Original intended use:
An individual, most likely a "nerd", posts a comment of excessive length on a subject, unnecessarily expanding on points rather than getting to the point, thereby deserving of the response
Recent most common usage:
A point is made in which the commenter backs up their claims with facts and evidence, only to receive the response
ti;dr means, Too ignorant, don't reply. It was spawned when the number of illiterate fags proliferated on the internet. In other words, it is the anti tl;dr.
OP : -insert valid point-
Failure: tl;dr <--- Omg illiteracy, so cool.
OP: ... ti;dr
"Too long; Must read"
re-appropriation of tl;dr which means too long, didn't read.
Created to revolutionize the culture of tl;dr.
Created to reinvigorate the importance of 'pursuing knowledge', so that we can make a stand against those who would seek to exploit our lack, of it.
"I clicked. I saw long post. tl;dr"
"I clicked. I saw long post. tl;mr"
A reaction to tl;dr -- instead of ignoring, you skim, see it's good, and decide to read later.
friend: dude, you should really read this blog entry on the philosophy of software freedom and meme engineering
you: it's way too long!
friend: yeah, but it's good; please don't tl;dr it
you: OK, I'll tl;rl it instead
friend: I'm so glad you kept our semblance of highbrow scholars by choosing tl;rl instead of tl;dr