AFF WTF?

Recently when I’ve searched on Google, I’ve noticed increasing numbers of ads that end with “aff.” For example: RAM Memory Upgrades 100% Compatible Memory for Desktops Laptops & Printers. Free Ship! Aff Gerbil for sale. aff. Check out the deals now! Disturbing Ghost Footage warning: very freaky -aff. All real examples, and the last was the result of searching for “Korean”, believe it or not. Anyway, at first I thought “aff.