I think the "tip model" could be greatly expanded. The reason it doesn't work as well now is because for one the ad revenue model exists, and when a system alre

I think the "tip model" could be greatly expanded. The reason it doesn't work as well now is because for one the ad revenue model exists, and when a system already dominates, people tend to stop looking for alternatives or embrace new ones. Why bother to educate people to donate money when you can just put ads on your content? Also, when 99.9% of content-makers use ads, it means you have a much smaller pool of potential donors, too. When most users on the internet can donate and are used to donating, it becomes much easier to receive donations for any random piece of content. And second, there's great friction in the existing micro-tip model, because the payment companies take big portions out of the small tips. Plus, there's quite a bit of fragmentation as not everyone has a PayPal account, or Apple account, or Google Contributor account, or Amazon account, etc. I think cryptocurrencies will eventually solve this issue, if what we've seen so far with Steemit.com, d.tube, and others like them is any indication of that. Once people get into any cryptocurrency at all, the liquidity of tips greatly increases, and it becomes much easier to tip someone with a cryptocurrency. It's still in the super-early stages, though. It could take another 10 years before this becomes more mainstream. I don't really see any other way for this to work. The Google Contributor or even Flattr models will not work because they are not decentralized and interoperable enough with others like them. You'll never see the majority of people on the web use Google Contributor or Flattr. It needs to be an ecosystem of such services that all integrate and interoperate with no friction and content creators can be paid with any of them. The tipping model needs to be more like email than Apple iMessage, so that everyone can have one and use it with any other similar system.