> a perpetual, irrevocable, unlimited, fully paid, fully sub-licensable (through multiple tiers), worldwide license So cjensen is right... They do not have any

> a perpetual, irrevocable, unlimited, fully paid, fully sub-licensable (through multiple tiers), worldwide license So cjensen is right... They do not have any copyrights. They only have a license to use your copyrighted works themselves. But you notice it doesn't say it's an exclusive license. Then they claim you've given them the right to "prohibit and enforce against any unauthorized copying". Which might be true, but I don't see how they have any right to define "unauthorized", since it's not their copyright, and their license isn't exclusive.