Is the commission 0%?
Eventually, yes. However, we cannot technically expose the platform to attacks with zero costs for the attacker. That's why we lock a commission (of 1 or 2%) on the recipient's account to either automatically unlock it after a period of time (a few weeks at start) or let publishers unlock it earlier as a reward for mining which is computationally cheap. No entity collects the commission, it is temporarily frozen for security reasons. The period can be decreased once the network stabilizes.