Two prominent science fiction authors have released their newest
novels as free downloads (in addition to bookstore physical copies). The first is Someone Comes to Town, Someone Leaves Town, by Cory Doctorow. This is an unconventional story about an entrepreneur (who happens to be the child of a mountain and a washing machine) who gets involved in a scheme to blanket Toronto with free wireless mesh network, among other things. The second is Accelerando, by Charles Stross, which tells the tale of three generations of the Macx family (beginning with perptually-slashdotted venture altruist Manfred Macx) in the years leading up to and beyond a technological singularity. To help provide more info on certain technical topics from Stross's novel, I've started up a Technical Companion on wikibooks.