Amazon.com's Honor System, a way for Web sites to receive payments from readers, is slowly taking hold. In all honesty, while I see the motivation for having such a thing and am enthusiastic about using it, I don't see how that sort of system could really support a website. First, when given the choice, most people won't pay. Second, even when people do pay, they aren't likely to keep paying. That's why you see Metafilter making $600 in a day, then practically nothing for the next month. If you wish to prove me wrong, feel free to donate to the Kaedrin Honor System Page (or go here to find other options for supporting Kaedrin:)! It will be much appreciated!
5:30 PM: More thoughts - It would be great if Amazon was able to incorperate some of its other functionality into the Honor System. For instance, allow visitors to review the website, or the ability to create lists of themed websites. Amazon could potentially parlay the Honor System into becoming a major portal site (even recommending sites for you based on what sites you've rated and visited), and given Amazon's rediculous commission system, its in their best interest to have people donating as much money as possible! Granted, the system could be abused, but I think Amazon has a lot to gain from integrating the Honor System with reviews and recommendations. Just my 2 cents.