Hey you'd be paid highest on Insurance, Travel, Mortgage, Stock, Software and Technology. But you need to have the best quality product to your viewers, so that once your website gets more popular and with huge viewers then automatically CTR will be increased rather thinking about CTR, work on what you know and Google Preaches you the same as what I said.
www.wikinewforum.com I guess...hahaha this is my site just kidding now come to you question no one will tell or may be no one know because this is Confidential