Web PR enthusiast Steve Rubel shared this tip, directly from bit.ly's management, on his personal stream site, and it's a good one. We recommend using {eredirect} if your click macro URL contains a query string. Create a single responsive short link to direct readers and split into two targets based on their operating system (e.g. Typically, data: and javascript: URLs are not supported for security reasons.
On Twitter and some instant-messaging services, there is a limit to the number of characters a message can carry – however, Twitter now shortens links automatically using its own URL shortening service, so there is no need to use a separate URL shortening service just to shorten URLs in a tweet. When you click on a backlink, it might open in the same tab or a new tab or window.
Launch and use Now that you're all set up, you're ready to use your new URL shortener. See if you are using Classic Analytics (ga.js) or Universal Analytics (analytics.js).