In a move likely to cause a lot of debate, Google have introduced domain parking adverts to Adsense. Now website owners do not even need to create content to generate revenue from Google advertising. Just parking a domain can raise revenue for site owners. Domain parking is a controversial issue, as it allows domain speculators to advertise their domain as for sale, while also making an income on advertising. Many people purchase misspelt domain names to make money from people accidentally typing a website into a browser incorrectly. Others just buy domains and sit on them, in the hope of making an easy profit.
Google Bashers (i.e. people who love to criticise Google) will see this as a giant leap down a slippery slope of immoral money making schemes. Of course, all it is is a billboard that may pick up some random passing traffic. Small fish really.