[perryizgr8]

At a previous employer, we used an internal link shortener that went like http://go/whatever. Very user friendly.

[grishka]

Say Google without saying Google. These URLs sometimes leak into the public internet, and there's especially lots of them in AOSP and Chromium code.

[knome]

Google is not the only company doing this, though ex-googlers may have spread it around initially.