When I hear the word potluck, I am transported, with a kind of olfactory immediacy, to the basement of my grandmother’s church. It smelled faintly damp — a mingling of industrial carpet cleaner and ...

A Taskrabbit "Tasker" helps a client with the placement of frames on a wall.Lea Suzuki/The San Francisco Chronicle via Getty Images There's been an uptick in recent years in the number of people ...