(1) too much of a cliché IM(H)O.
(2) if the book is just about taking photos, why not (this applies to 1 also), otherwise cliché-esque too.
(3) banal - might have been more interesting showing a transformation process for one photo
(4) banal, romantic image of the lonely photographer on his rock; last century-ish
(5) nice, striking image, good background
(6) the text doesn't say read me; uninspiring image
(7) the only one that suggests there is more to digital photography than taking photos.
I don't think any here are satisfying... Too much visual emphasis on digital photography being a matter of using a camera to take photos. Too many visual clichés - useful, I know, in the eye of the beholder, but not very exciting - not exciting enough.