safelink.at is a regular url shortener with a tiny difference: Clicking on a shortened url will not instantly get you to the referenced site, but instead display you its url. Then, it is up to you whether or not you want to follow the link.
In short: With safelink.at, you can send short urls to people that are afraid of unkown urls.
Enter your url that should be shorter.
Send the short url to someone.
The receiver will be asked if they want to visit the site or not.