Advertising enables WikiAnswers to be free for all users. It pays for the programming and development, hosting, and bandwidth for the servers. Unlike Wikipedia which is a non-profit and requires hundreds of thousands of dollars in user donations, users of WikiAnswers are never solicited for contributions. The cost of this is putting up with some advertising.
The WikiAnswers contributors know so much because they learned that much in school and from WikiAnswers.
Yes, WikiAnswers is a for-profit organization, which makes its revenue from advertising.
WikiAnswers is not here to provide advertising space via questions.
Because there is so much that you can do!
You can find all the advertising rates for Answers.com and WikiAnswers at: http://www.answers.com/main/advertise_with_us.jsp .
WikiAnswers has so much information because the people who contribute to WikiAnswers know a lot, and the more contributors know, the more information WikiAnswers will have.
WikiAnswers has a lot of ads, actually. They just show to non-registered users, so you may not have seen them if you are a registered user.
What page? Wikianswers? If so, then get off it.
WikiAnswers is not here to provide advertising space via questions.
For more business
WikiAnswers is better because you don't need an account to type in an answer
No. WikiAnswers isn't intended to promote products or websites, except through the advertising provided by Google.