From past few months, this new trend come in wallpaper niche sites. For example sites like imgoz.com, carsf1.tk etc. ranking in just few days. All they do is post wallpapers and while posting them they give the link to their original site and image getting ranked without any effort. How the hell is this happening ? They are just buying domains with tk, xyz extensions and ranking their domains images without any backlinks and stuff. Can anybody tell how they are doing this? This crasf1.tk is just 2 days old and is ranking majorly on Happy Birthday.