It can't detect Whats on the other end of an adf.ly link... It says that it redirects to the same link and says: URL shortener...
For an example:
Here is what I found:
• Check URL: http://adf.ly/1iayYG
• Redirect: http://adf.ly/1iayYG
• Classified as: URL Shortener
We've looked into this and it's missing from our list!! We have over 1,400 shortening services but not this one. Thanks so much. We'll add this early next week - hope that's not too far away. Please nudge me if it's not implemented by then firstname.lastname@example.org