URL Shortener tr.im to Discontinue Service
daringfireball.net/linked/2009/08/10/trim
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
They plan to keep redirecting existing tr.im URLs through the end of the year, but after that, they’re all dead. And people ask me why I wrote my own URL shortener for DF’s Twitter account.