Seems like Bui is at it again.
http://pastebin.com/heYvWu5Y
>Visit any 8chboard and type localStorage.favorites in dev console. If you see a string containing a bunch of \u0055 type numbers, then you fell victim to the XSS.
Right click and select "inspect element" if you're on firefox or a firefox fork. Then click on console, enter localStorage.favorites, and check if you have cooties.
Stay away from imgur links for now.