I think it stems from the facebook DSLR page that updates you to postings on the site, I reckon someone has hacked it and if you look at a facebook link it loads through a redirected address being http://ysy777777puvy.xyz/ulyfgili8ofmet ... rb4ap2f2s/
I have thrown some sevens into this address so it wont work
you then get warnings (fake) that your phone has infected files and you should use 360av antivirus
Iv'e killed the page there so have not gone further.
I want to stand as close to the edge as I can without going over. Out on the edge you see all the kinds of things you can't see from the center.