"... about maximizing profits from a website.
Google says 'Thou shall not create a site for the purpose of displaying AdSense'. I have been following this rule, but not because Google said so. Look at it from this angle - you found a niche, like photography, where hundreds of advertisers will pay you 50 cents to 1.50 a click (we are talking max, not the average). What does it mean? It means that if advertisers are paying you that much, than these visitors are worth the money. So obviously you'd be stupid to create a site for AdSense only. Instead, why not create a resource for photographers and make money on software, e-books (tons of specialty e-books for photographers), drop shippers, paid listings, membership fees and AdSense.
The best way to maximize your AdSense profits is to think beyond AdSense. The real asset is the visitors." DavidDeprice