FastForward circumvents sites which make you wait (like adf.ly), make you do something (e.g., show.co and sub2unlock.com) and even trackers (such as bit.ly and t.co)!.
s that short URL you're visiting REALLY going to contain cute kittens, or instead is it going to mug you and steal your wallet? Unshorten.It! takes any bullets for you, analysing the website for safety and letting you see it before you decide whether to proceed.
Link Unshortner is a tool to show the user the final redirect of any URL. This is especially important if the link you are clicking on is not from a reliable source. Short links are often used for malicious activities to trick the user into trusting a site.