Is 1-3$ enough? If we had to invoice "the internet" and OSS to users instead of financing it with ads, wouldn't it require something starting above 1. $40/month for the charity websites and 2. $600 per machine (the equivalent of the cost of Windows) for OSS software?
Its better than nothing as a supplement to the funding some OSS software already gets. It would be nice for the internet community to be able to fund the internet infrastructure without having to have any idea about all the projects that make it possible. I'm not saying it will work as a sole source of funding but may of these projects are desperately underfunded and could do with some revenue. I think may users would be happy to donate to the projects that make the internet possible.