Also, it's not like advertisement doesn't work within an anonymous environment. There's still a lot of information to use: the main topics of the community, for

Also, it's not like advertisement doesn't work within an anonymous environment. There's still a lot of information to use: the main topics of the community, for example. TV, radio and newspaper advertisement worked fine for decades. Web services can be created with significant less resources than TV stations and newspapers, but we are meant to believe that they are only viable if users relinquish their anonymity? Give me a break. Businesses will try to make as much money as possible within what users tolerate. I mostly stopped going to the cinema because I don't feel it's acceptable that I pay a ticket and then have to sit through at least 1/2 hour of advertisement. But many people still tolerate that so they keep doing it.