The shiggy license
The Shiggy Media License can be considered an alternative to Creative Commons, with one change: it can be revoked or changed. You can use it on your site however you want, and the license text is simplified as well. We also might offer copyleft and permissive licenses. For now, a good copyleft license would be anything from GNU, and a permissive one would be Apache, as it has some Legal protections.