Reading Craigslist, I feel as though I am dipping my cup straight into the swift-flowing stream of human need. Laid-back is the only thing these people aren’t. When I step back onto the “regular” dating sites, I feel like someone coming out of bright sunshine into a darkened room; it takes a while for my eyes to readjust. Everything’s so . . . subtle. On Craigslist, people say what they want; on Nerve or OkCupid, they say who they are, and you infer the rest. More…