We have ad-supported e-reading today, but the ads always sit on the periphery at most. That makes us more than slightly nervous about a newly-granted Microsoft patent for contextual e-book ads. The development would make the pitch based on not just targeted pages but the nature of the book in question: a sci-fi novel might try to sell lightsabers, and characters themselves might slip into the ads themselves if there's a fit. Promos could be either generated on the spot or rem
