when I saw the title (Getting lost in Proof of XXX) I thought it would measure your importance on the network by the amount of porn you have. what's wrong with me
I thought the same...
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
By the way, another proof of xxx I have come across is proof of burn, where the coins are burnt by sending them to an irrecoverable address. Though I am not sure what it proves !!!