To add such data, just enter it as the “label” parameter to a tracker URL. You may also want to consider joining 301works, a free service from the Internet Archive that works to create a database of all shortened URL mappings.
Anyone using the link will need to know the password to proceed to its final destination. You can also find out how many clicks your particular bit.ly link got compared to the total clicks on the long link. Privacy and security[edit] A short URL obscures the target address and can be used to redirect to an unexpected site. Some URL shortening service providers have found themselves on spam blacklists, because of the use of their redirect services by sites trying to bypass those very same blacklists. Example: link UPDATE The above is for the older version of the API - ga.js. Twitter will use this to make your timeline better.
See if you are using Classic Analytics (ga.js) or Universal Analytics (analytics.js).