Most of us wander the Earth lost and forlorn, adrift in an uncaring sea without love to buoy us. It's a strange and wondrous thing, then, when a quick perusal of the Craigslist barter section reveals three seemingly unrelated individuals with the capacity to fulfill one another's desires. Poster No. 1 has some pretty unremarkable greetings cards up for grabs. Think straw hats and teddy bears, and not particularly well-drawn ones, at that. These cards say, "Mom, I don't really care." In exchange