“If online dating can blunt the emotional pain of separation, if adults can afford to be increasingly demanding about what they want from a relationship, the effect of online dating seems positive. But what if it's also the case that the prospect of finding an ever more compatible mate with the click of a mouse means a future of relationship instability, a paradox of choice that keeps us chasing the illusive bunny around the dating track?”

It's the mother of all search problems: how to find a spouse, a mate, a date. The escalating marriage age and declining marriage rate mean we're spending a greater portion of our lives unattached, searching for love well into our thirties and forties.

It's no wonder that a third of America's 90 million singles are turning to dating Web sites. 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. Thanks to the increasingly efficient algori