In case you want to upload Green Day icons on GSB, first you have to register on Iconastic.com. You will be uploading your icons from there and they will be displayed on both sites; on Iconastic and GSB. It only applies to Green Day related icons. Icons of any other kind will only be displayed on Iconastic.
Let's call it a beginning of something that we'll have in future. We'll connect your accounts and you'll be using the same one for these sites. As for the others of our production.