There are security implications, and obsolete short URLs remain in existence and may be circulated long after they cease to point to a relevant or even extant destination. This is compatible with most web browsers and platforms as long as your bookmarks or favorites allow javascript. This restriction is imposed by optimisation algorithms designed to create reports and rapidly fill the dashboard.
They create unique tracking links and give you insight on how to create value out of the sharing data. TinyURL was used by early bloggers before many of these other services were around. We want tracking to work everywhere so I recommend using a library with robust cross-browser event handling. 1 billion times.[12] Around that time, bit.ly and TinyURL were the most widely used URL-shortening services.[12] One service, tr.im, stopped generating short URLs in 2009, blaming a lack of revenue-generating mechanisms to cover costs and Twitter's default use of the bit.ly shortener, and questioning whether other shortening services could be profitable from URL shortening in the longer term.[13] It resumed for a time,[14] then closed. See if you are using Classic Analytics (ga.js) or Universal Analytics (analytics.js).