"If the things you would spend your money on are part of the very system of wealth you contribute to, then you don't need money." Better to talk about currency

"If the things you would spend your money on are part of the very system of wealth you contribute to, then you don't need money." Better to talk about currency than money. You are right, its place is where what you want to consume and what you (want to) produce are different goods. I don't see why the web would change that basic principle. You may contribute your expertise to Hacker News, an open source project and a couple of Wikipedia pages. But surely you don't want to consume only your own products. But maybe the producers of your desired "goods" (whether purely informational bits and bytes or real physical apples or oranges) derive no direct benefit from your aforementioned products. You will necessarily arrive at some medium, whether you call it credits or miles or dollars.