One reason I'm a fan of MIT Press (the publisher of both of my books) is that for an academic press their prices are very low (my 2011 book is currently $14.21 at Amazon) which means that a broader range of people can afford the book than if it were at another press. Another reason I'm a fan is that MIT has tended to be a leader in exploring new electronic media.
So it's very cool that they've chosen a chapter of my Perplexities of Consciousness for their BITS project, a new enterprise which allows people to electronically buy a portion of an MIT Press book for a low price ($2.99 in this case) and then later, if the reader wants, the whole book for 40% off list price. The chapter they've chosen is "When Your Eyes Are Closed, What Do You See?", which although it is the eighth and final chapter of my book, does not require that the reader know material from the previous chapters -- thus, a reasonable choice for a BIT.
What I'd really love to see down the road is a model where you can buy any selection of pages from a book for a nickel per page.