There's significant variance from one service to another when it comes to uptime, for example, while on the other hand given that the process involves using an HTTP redirect there’s also the latency issue. But perhaps more importantly is the fact that they obscure the target address and thus may be used to trick users to an unexpected destination.
This means users are susceptible to something as innocent as being rickrolled to potentially much more harmful exposure, like being redirected to scamming websites or malware-ridden pages. Fortunately, there are several ways to peek behind a shortened URL to see exactly where the link will take you before clicking it, so let's take a quick look at a few of them.
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