>>Are you saying that webmasters should write a script that generates these public/private keys on every page hit, and then somehow stores all of those millions

>>Are you saying that webmasters should write a script that generates these public/private keys on every page hit, and then somehow stores all of those millions of private keys... somewhere? On your server? There's actually a solution called stealth addresses that let you publicize a single static donation address and yet receive every donation at its own unique address: https://bitcoin.stackexchange.com/questions/20701/what-is-a-stealth-address https://bitcoin.stackexchange.com/questions/20701/what-is-a-... This is an off-chain construct so can be utilized with any blockchain.