The first thing I wonder when I see sites similar to yours is "How can you stop gaming?" I don't want to invest my time in yet another site like yours when I am fairly confident a competent programmer could write a script in ten minutes that would ruin its reliability.<p>Other thoughts:<p>
it is a bit overwhelming with all its options<p>
why is network in cents?<p>
Shouldn't results be ordered by score? Why is something with -20% above something with 20%? but below something with 2%? Confusing.<p>
The navigation links (blog/books/etc) should be available everywhere, as it is the navigation options available once you leave the front page are barren.<p>
Think you should have a bit of an explanation about what the trusting you to impact a user's google results means, rather than just doing it if they happen to click there.
I like the concept, but perhaps it could be even clearer somehow.<p>As willarson says, it seems vulnerable to spam (I'm happy to see that 'squeezed books' is what comes up when you put 'business book summaries' in, though:-)<p>I'm having trouble signing up, it keeps saying this:<p>"You have specified an incorrect or inactive email, or an invalid password."