Book excerpt: ** Previously published in hardcover as Love in the Time of Algorithms ** Once considered the realm of the lonely and desperate, sites like eHarmony, Match, OkCupid, and Plenty of Fish have been embraced by pretty much every demographic. Dating has been transformed from a daunting transaction based on scarcity to one in which the possibilities are almost endless. Now anyone can search for exactly what they want, connect with more people, and get more information about those people than ever before. As journalist Dan Slater shows, online dating is changing society in more profound ways than we imagine. He explores how these new technologies, by altering our perception of what’s possible, are reconditioning our feelings about commitment and challenging the traditional paradigm of adult life. Slater takes readers behind the scenes of a fascinating business. Dating sites capitalize on our quest for love, but how do their creators’ ideas about pro ts, morality, and the nature of desire shape the virtual worlds they’ve created for us?