Safe.mn addresses the two main criticisms to URL shorteners: security and transparency. All links are thoroughly verified for viruses, malware, phishing, malicious content, session stealing, cross-site scripting attacks, etc. Any suspicious link gets flagged, and users are warned about it. Safe.mn is also the most transparent URL shortener service: all links generated by Safe.mn are publicly available, and updated throughout the day. Anybody can get the list, and create a mirror of it.
Use safe.mn to show your visitors your links are safe.