Want to advertise your book's website globally? You can do it yourself for free on traffic exchanges. In a traffic exchange, people look at other people's websites in exchange for credits, which they use to display their own site. Don't worry, it works very simply and most exchanges are free. All you need to provide is your contact information, including email address, and the link to your website.
Most advertising on traffic exchanges is about "business opportunities", so if you have a book or some other unique product, you will get noticed simply because you are promoting something different. I have boosted the sales of the Creator Cards in this way. (I'll be advertising my book next.)
Here are links to some traffic exchanges which you can try out. Just click on the banners:
WebBizInsider is the biggest, with over 100,000 members.