Encrypting your link and protect the link from viruses, malware, thief, etc! Made your link safe to visit.
Safelink is widely used by blog downloads as a place to serve ads from Google Adsense because the blog downloads 99% will not be accepted by Google Adsense Therefore the blog blog download makes a safelink as a Google Adsense broadcast media. As a broadcast medium, safelink can be said to have a 2-fold advantage compared to using link shorten (link shortener like adf.ly, bit.ly etc.) why is that like that? Imagine if your main blog already has advertisements (not from google adsense) then on the safelink blog you have more advertisements that have been shown (both adsense, propeller, etc.) then the benefits gained from safelink are 2-fold instead.