Stock rules:
From 12. April 2015 on:
See the individual license in the image's description. Unless stated otherwise there, our stock images published from 12/April/2015 on are licensed under the Creative Commons Attribution 3.0 Unported (CC BY 3.0) license. You are required to credit us as stockhaha.deviantart.com
Our stock images published between 09. Oct. 2007 and 11. April 2015:
Standard deviantart Rules plus
You must notify us of any use in a comment left under the stock you used.
Commercial and/or outside dA usage negotiable but not granted without our written permission.
Our stock images published up until 08. Oct. 2007 :
Stan