It's an extension for Google Chrome browser that saves you time by displaying summaries next to headlines and titles on the web, mostly clickbait ones.
When you see a clickbait title, go against reason, hold your breath and click it. Be brave!
Click on the brown TL;DR icon in the Chrome menu and type the spoiler for the clickbait title, or just a summery of the article.
Now next to the title there is an icon that everybody can see and when a user hovers on it a popup with your TL;DR will appear. Of course you will also enjoy TL;DRs submitted by other user.
You should definitely check it out! We share posts with clickbait title and add the spoilers. Some news pages already blocked us, FUN!