This work by VisualPharm is licensed under a Creative Commons Attribution-No Derivative Works 3.0 Unported License. It means
If you use the icons on your web site, please place a link to www.visualpharm.com on the same pages the icons are used
If you use the icons in your desktop software, please link to us in the About dialog of your software and somewhere on your web site
If you customize your own desktop, you may use it completely free of charge.