A link which provides sex photos of teen girls is being spread on Facebook

This is actually a malware scam. When a user clicks on this link it redirects to an amazon web service page and then to a compromised box website. User is then asked to download a file and after installation the system gets infected and downloading of worm begins.

It then shares the link with all the Facebook contacts 

The link URL is shortened using shortening service so beware of clicking links with this extension

This malware mainly targets chrome users

This kind of scam is mainly done to make a large network of social media users which can be used in reselling Facebook friends and likes (auto likes) reselling twitter accounts and generating pay per click revenue by visiting sites and ads