Startup Clinic: Pinterest clones and the difficulty of getting timing right

Editor’s note: This is the second in a series of VentureBeat columns by award-winning author and serial entrepreneur Penelope Trunk. She’s going to be our startup critic: She’ll review new companies, point out what they’re doing right, and give them advice (which she’s never shy about anyway) for how they can improve. This week she takes a look at Boxnutt.